# HG changeset patch
# User gibus
# Date 1327313684 -3600
# Node ID 5ff35e8e16e2450c257857e518a1ddb820617fd1
# Parent  ce92c17cadc54b830d232043509681d634fab855
Add libjs-asciimathml.

diff -r ce92c17cadc5 -r 5ff35e8e16e2 src/cm/media/js/lib/asciimathtml/ASCIIMathML.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/asciimathtml/ASCIIMathML.js	Mon Jan 23 11:14:44 2012 +0100
@@ -0,0 +1,3492 @@
+/*
+ASCIIMathML.js
+==============
+This file contains JavaScript functions to convert ASCII math notation
+and LaTeX to Presentation MathML. Simple graphics commands are also
+translated to SVG images. The conversion is done while the (X)HTML 
+page loads, and should work with Firefox/Mozilla/Netscape 7+ and Internet 
+Explorer 6/7 + MathPlayer (http://www.dessci.com/en/products/mathplayer/) +
+Adobe SVGview 3.03 (http://www.adobe.com/svg/viewer/install/).
+
+Just add the next line to your (X)HTML page with this file in the same folder:
+
+<script type="text/javascript" src="ASCIIMathML.js"></script>
+
+(using the graphics in IE also requires the file "d.svg" in the same folder).
+This is a convenient and inexpensive solution for authoring MathML and SVG.
+
+Version 2.0.1 Sept 27, 2007, (c) Peter Jipsen http://www.chapman.edu/~jipsen
+This version extends ASCIIMathML.js with LaTeXMathML.js and ASCIIsvg.js.
+Latest version at http://www.chapman.edu/~jipsen/mathml/ASCIIMathML.js
+If you use it on a webpage, please send the URL to jipsen@chapman.edu
+
+The LaTeXMathML modifications were made by Douglas Woodall, June 2006.
+(for details see header on the LaTeXMathML part in middle of file)
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, but WITHOUT 
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
+FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License 
+(at http://www.gnu.org/licences/lgpl.html) for more details.
+*/
+
+var mathcolor = "blue";        // change it to "" (to inherit) or another color
+var mathfontsize = "1em";      // change to e.g. 1.2em for larger math
+var mathfontfamily = "serif";  // change to "" to inherit (works in IE) 
+                               // or another family (e.g. "arial")
+var automathrecognize = false; // writing "amath" on page makes this true
+var checkForMathML = true;     // check if browser can display MathML
+var notifyIfNoMathML = true;   // display note at top if no MathML capability
+var alertIfNoMathML = false;   // show alert box if no MathML capability
+var translateOnLoad = true;    // set to false to do call translators from js 
+var translateLaTeX = true;     // false to preserve $..$, $$..$$
+var translateLaTeXformatting = true; // false to preserve \emph,\begin{},\end{}
+var translateASCIIMath = true; // false to preserve `..`
+var translateASCIIsvg = true;  // false to preserve agraph.., \begin{graph}..
+var avoidinnerHTML = false;   // set true if assigning to innerHTML gives error
+var displaystyle = true;      // puts limits above and below large operators
+var showasciiformulaonhover = true; // helps students learn ASCIIMath
+var decimalsign = ".";        // change to "," if you like, beware of `(1,2)`!
+var AMdelimiter1 = "`", AMescape1 = "\\\\`"; // can use other characters
+var AMdocumentId = "wikitext" // PmWiki element containing math (default=body)
+var checkforprocessasciimathinmoodle = false; // true for systems like Moodle
+var dsvglocation = ""; // path to d.svg (blank if same as ASCIIMathML.js loc)
+
+var isIE = document.createElementNS==null;
+
+if (document.getElementById==null) 
+  alert("This webpage requires a recent browser such as\
+\nMozilla/Netscape 7+ or Internet Explorer 6+MathPlayer")
+
+// all further ASCIIMathML global variables start with "AM"
+
+function AMcreateElementXHTML(t) {
+  if (isIE) return document.createElement(t);
+  else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
+}
+
+function AMnoMathMLNote() {
+  var nd = AMcreateElementXHTML("h3");
+  nd.setAttribute("align","center")
+  nd.appendChild(AMcreateElementXHTML("p"));
+  nd.appendChild(document.createTextNode("To view the "));
+  var an = AMcreateElementXHTML("a");
+  an.appendChild(document.createTextNode("ASCIIMathML"));
+  an.setAttribute("href","http://www.chapman.edu/~jipsen/asciimath.html");
+  nd.appendChild(an);
+  nd.appendChild(document.createTextNode(" notation use Internet Explorer 6+"));  
+  an = AMcreateElementXHTML("a");
+  an.appendChild(document.createTextNode("MathPlayer"));
+  an.setAttribute("href","http://www.dessci.com/en/products/mathplayer/download.htm");
+  nd.appendChild(an);
+  nd.appendChild(document.createTextNode(" or Netscape/Mozilla/Firefox"));
+  nd.appendChild(AMcreateElementXHTML("p"));
+  return nd;
+}
+
+function AMisMathMLavailable() {
+  if (navigator.appName.slice(0,8)=="Netscape") 
+    if (navigator.appVersion.slice(0,1)>="5") return null;
+    else return AMnoMathMLNote();
+  else if (navigator.appName.slice(0,9)=="Microsoft")
+    try {
+        var ActiveX = new ActiveXObject("MathPlayer.Factory.1");
+        return null;
+    } catch (e) {
+        return AMnoMathMLNote();
+    }
+  else return AMnoMathMLNote();
+}
+
+// character lists for Mozilla/Netscape fonts
+var AMcal = [0xEF35,0x212C,0xEF36,0xEF37,0x2130,0x2131,0xEF38,0x210B,0x2110,0xEF39,0xEF3A,0x2112,0x2133,0xEF3B,0xEF3C,0xEF3D,0xEF3E,0x211B,0xEF3F,0xEF40,0xEF41,0xEF42,0xEF43,0xEF44,0xEF45,0xEF46];
+var AMfrk = [0xEF5D,0xEF5E,0x212D,0xEF5F,0xEF60,0xEF61,0xEF62,0x210C,0x2111,0xEF63,0xEF64,0xEF65,0xEF66,0xEF67,0xEF68,0xEF69,0xEF6A,0x211C,0xEF6B,0xEF6C,0xEF6D,0xEF6E,0xEF6F,0xEF70,0xEF71,0x2128];
+var AMbbb = [0xEF8C,0xEF8D,0x2102,0xEF8E,0xEF8F,0xEF90,0xEF91,0x210D,0xEF92,0xEF93,0xEF94,0xEF95,0xEF96,0x2115,0xEF97,0x2119,0x211A,0x211D,0xEF98,0xEF99,0xEF9A,0xEF9B,0xEF9C,0xEF9D,0xEF9E,0x2124];
+
+var CONST = 0, UNARY = 1, BINARY = 2, INFIX = 3, LEFTBRACKET = 4, 
+    RIGHTBRACKET = 5, SPACE = 6, UNDEROVER = 7, DEFINITION = 8,
+    LEFTRIGHT = 9, TEXT = 10; // token types
+
+var AMsqrt = {input:"sqrt", tag:"msqrt", output:"sqrt", tex:null, ttype:UNARY},
+  AMroot  = {input:"root", tag:"mroot", output:"root", tex:null, ttype:BINARY},
+  AMfrac  = {input:"frac", tag:"mfrac", output:"/",    tex:null, ttype:BINARY},
+  AMdiv   = {input:"/",    tag:"mfrac", output:"/",    tex:null, ttype:INFIX},
+  AMover  = {input:"stackrel", tag:"mover", output:"stackrel", tex:null, ttype:BINARY},
+  AMsub   = {input:"_",    tag:"msub",  output:"_",    tex:null, ttype:INFIX},
+  AMsup   = {input:"^",    tag:"msup",  output:"^",    tex:null, ttype:INFIX},
+  AMtext  = {input:"text", tag:"mtext", output:"text", tex:null, ttype:TEXT},
+  AMmbox  = {input:"mbox", tag:"mtext", output:"mbox", tex:null, ttype:TEXT},
+  AMquote = {input:"\"",   tag:"mtext", output:"mbox", tex:null, ttype:TEXT};
+
+var AMsymbols = [
+//some greek symbols
+{input:"alpha",  tag:"mi", output:"\u03B1", tex:null, ttype:CONST},
+{input:"beta",   tag:"mi", output:"\u03B2", tex:null, ttype:CONST},
+{input:"chi",    tag:"mi", output:"\u03C7", tex:null, ttype:CONST},
+{input:"delta",  tag:"mi", output:"\u03B4", tex:null, ttype:CONST},
+{input:"Delta",  tag:"mo", output:"\u0394", tex:null, ttype:CONST},
+{input:"epsi",   tag:"mi", output:"\u03B5", tex:"epsilon", ttype:CONST},
+{input:"varepsilon", tag:"mi", output:"\u025B", tex:null, ttype:CONST},
+{input:"eta",    tag:"mi", output:"\u03B7", tex:null, ttype:CONST},
+{input:"gamma",  tag:"mi", output:"\u03B3", tex:null, ttype:CONST},
+{input:"Gamma",  tag:"mo", output:"\u0393", tex:null, ttype:CONST},
+{input:"iota",   tag:"mi", output:"\u03B9", tex:null, ttype:CONST},
+{input:"kappa",  tag:"mi", output:"\u03BA", tex:null, ttype:CONST},
+{input:"lambda", tag:"mi", output:"\u03BB", tex:null, ttype:CONST},
+{input:"Lambda", tag:"mo", output:"\u039B", tex:null, ttype:CONST},
+{input:"mu",     tag:"mi", output:"\u03BC", tex:null, ttype:CONST},
+{input:"nu",     tag:"mi", output:"\u03BD", tex:null, ttype:CONST},
+{input:"omega",  tag:"mi", output:"\u03C9", tex:null, ttype:CONST},
+{input:"Omega",  tag:"mo", output:"\u03A9", tex:null, ttype:CONST},
+{input:"phi",    tag:"mi", output:"\u03C6", tex:null, ttype:CONST},
+{input:"varphi", tag:"mi", output:"\u03D5", tex:null, ttype:CONST},
+{input:"Phi",    tag:"mo", output:"\u03A6", tex:null, ttype:CONST},
+{input:"pi",     tag:"mi", output:"\u03C0", tex:null, ttype:CONST},
+{input:"Pi",     tag:"mo", output:"\u03A0", tex:null, ttype:CONST},
+{input:"psi",    tag:"mi", output:"\u03C8", tex:null, ttype:CONST},
+{input:"Psi",    tag:"mi", output:"\u03A8", tex:null, ttype:CONST},
+{input:"rho",    tag:"mi", output:"\u03C1", tex:null, ttype:CONST},
+{input:"sigma",  tag:"mi", output:"\u03C3", tex:null, ttype:CONST},
+{input:"Sigma",  tag:"mo", output:"\u03A3", tex:null, ttype:CONST},
+{input:"tau",    tag:"mi", output:"\u03C4", tex:null, ttype:CONST},
+{input:"theta",  tag:"mi", output:"\u03B8", tex:null, ttype:CONST},
+{input:"vartheta", tag:"mi", output:"\u03D1", tex:null, ttype:CONST},
+{input:"Theta",  tag:"mo", output:"\u0398", tex:null, ttype:CONST},
+{input:"upsilon", tag:"mi", output:"\u03C5", tex:null, ttype:CONST},
+{input:"xi",     tag:"mi", output:"\u03BE", tex:null, ttype:CONST},
+{input:"Xi",     tag:"mo", output:"\u039E", tex:null, ttype:CONST},
+{input:"zeta",   tag:"mi", output:"\u03B6", tex:null, ttype:CONST},
+
+//binary operation symbols
+//{input:"-",  tag:"mo", output:"\u0096", tex:null, ttype:CONST},
+{input:"*",  tag:"mo", output:"\u22C5", tex:"cdot", ttype:CONST},
+{input:"**", tag:"mo", output:"\u22C6", tex:"star", ttype:CONST},
+{input:"//", tag:"mo", output:"/",      tex:null, ttype:CONST},
+{input:"\\\\", tag:"mo", output:"\\",   tex:"backslash", ttype:CONST},
+{input:"setminus", tag:"mo", output:"\\", tex:null, ttype:CONST},
+{input:"xx", tag:"mo", output:"\u00D7", tex:"times", ttype:CONST},
+{input:"-:", tag:"mo", output:"\u00F7", tex:"divide", ttype:CONST},
+{input:"@",  tag:"mo", output:"\u2218", tex:"circ", ttype:CONST},
+{input:"o+", tag:"mo", output:"\u2295", tex:"oplus", ttype:CONST},
+{input:"ox", tag:"mo", output:"\u2297", tex:"otimes", ttype:CONST},
+{input:"o.", tag:"mo", output:"\u2299", tex:"odot", ttype:CONST},
+{input:"sum", tag:"mo", output:"\u2211", tex:null, ttype:UNDEROVER},
+{input:"prod", tag:"mo", output:"\u220F", tex:null, ttype:UNDEROVER},
+{input:"^^",  tag:"mo", output:"\u2227", tex:"wedge", ttype:CONST},
+{input:"^^^", tag:"mo", output:"\u22C0", tex:"bigwedge", ttype:UNDEROVER},
+{input:"vv",  tag:"mo", output:"\u2228", tex:"vee", ttype:CONST},
+{input:"vvv", tag:"mo", output:"\u22C1", tex:"bigvee", ttype:UNDEROVER},
+{input:"nn",  tag:"mo", output:"\u2229", tex:"cap", ttype:CONST},
+{input:"nnn", tag:"mo", output:"\u22C2", tex:"bigcap", ttype:UNDEROVER},
+{input:"uu",  tag:"mo", output:"\u222A", tex:"cup", ttype:CONST},
+{input:"uuu", tag:"mo", output:"\u22C3", tex:"bigcup", ttype:UNDEROVER},
+
+//binary relation symbols
+{input:"!=",  tag:"mo", output:"\u2260", tex:"ne", ttype:CONST},
+{input:":=",  tag:"mo", output:":=",     tex:null, ttype:CONST},
+{input:"lt",  tag:"mo", output:"<",      tex:null, ttype:CONST},
+{input:"<=",  tag:"mo", output:"\u2264", tex:"le", ttype:CONST},
+{input:"lt=", tag:"mo", output:"\u2264", tex:"leq", ttype:CONST},
+{input:">=",  tag:"mo", output:"\u2265", tex:"ge", ttype:CONST},
+{input:"geq", tag:"mo", output:"\u2265", tex:null, ttype:CONST},
+{input:"-<",  tag:"mo", output:"\u227A", tex:"prec", ttype:CONST},
+{input:"-lt", tag:"mo", output:"\u227A", tex:null, ttype:CONST},
+{input:">-",  tag:"mo", output:"\u227B", tex:"succ", ttype:CONST},
+{input:"-<=", tag:"mo", output:"\u2AAF", tex:"preceq", ttype:CONST},
+{input:">-=", tag:"mo", output:"\u2AB0", tex:"succeq", ttype:CONST},
+{input:"in",  tag:"mo", output:"\u2208", tex:null, ttype:CONST},
+{input:"!in", tag:"mo", output:"\u2209", tex:"notin", ttype:CONST},
+{input:"sub", tag:"mo", output:"\u2282", tex:"subset", ttype:CONST},
+{input:"sup", tag:"mo", output:"\u2283", tex:"supset", ttype:CONST},
+{input:"sube", tag:"mo", output:"\u2286", tex:"subseteq", ttype:CONST},
+{input:"supe", tag:"mo", output:"\u2287", tex:"supseteq", ttype:CONST},
+{input:"-=",  tag:"mo", output:"\u2261", tex:"equiv", ttype:CONST},
+{input:"~=",  tag:"mo", output:"\u2245", tex:"cong", ttype:CONST},
+{input:"~~",  tag:"mo", output:"\u2248", tex:"approx", ttype:CONST},
+{input:"prop", tag:"mo", output:"\u221D", tex:"propto", ttype:CONST},
+
+//logical symbols
+{input:"and", tag:"mtext", output:"and", tex:null, ttype:SPACE},
+{input:"or",  tag:"mtext", output:"or",  tex:null, ttype:SPACE},
+{input:"not", tag:"mo", output:"\u00AC", tex:"neg", ttype:CONST},
+{input:"=>",  tag:"mo", output:"\u21D2", tex:"implies", ttype:CONST},
+{input:"if",  tag:"mo", output:"if",     tex:null, ttype:SPACE},
+{input:"<=>", tag:"mo", output:"\u21D4", tex:"iff", ttype:CONST},
+{input:"AA",  tag:"mo", output:"\u2200", tex:"forall", ttype:CONST},
+{input:"EE",  tag:"mo", output:"\u2203", tex:"exists", ttype:CONST},
+{input:"_|_", tag:"mo", output:"\u22A5", tex:"bot", ttype:CONST},
+{input:"TT",  tag:"mo", output:"\u22A4", tex:"top", ttype:CONST},
+{input:"|--",  tag:"mo", output:"\u22A2", tex:"vdash", ttype:CONST},
+{input:"|==",  tag:"mo", output:"\u22A8", tex:"models", ttype:CONST},
+
+//grouping brackets
+{input:"(", tag:"mo", output:"(", tex:null, ttype:LEFTBRACKET},
+{input:")", tag:"mo", output:")", tex:null, ttype:RIGHTBRACKET},
+{input:"[", tag:"mo", output:"[", tex:null, ttype:LEFTBRACKET},
+{input:"]", tag:"mo", output:"]", tex:null, ttype:RIGHTBRACKET},
+{input:"{", tag:"mo", output:"{", tex:null, ttype:LEFTBRACKET},
+{input:"}", tag:"mo", output:"}", tex:null, ttype:RIGHTBRACKET},
+{input:"|", tag:"mo", output:"|", tex:null, ttype:LEFTRIGHT},
+//{input:"||", tag:"mo", output:"||", tex:null, ttype:LEFTRIGHT},
+{input:"(:", tag:"mo", output:"\u2329", tex:"langle", ttype:LEFTBRACKET},
+{input:":)", tag:"mo", output:"\u232A", tex:"rangle", ttype:RIGHTBRACKET},
+{input:"<<", tag:"mo", output:"\u2329", tex:null, ttype:LEFTBRACKET},
+{input:">>", tag:"mo", output:"\u232A", tex:null, ttype:RIGHTBRACKET},
+{input:"{:", tag:"mo", output:"{:", tex:null, ttype:LEFTBRACKET, invisible:true},
+{input:":}", tag:"mo", output:":}", tex:null, ttype:RIGHTBRACKET, invisible:true},
+
+//miscellaneous symbols
+{input:"int",  tag:"mo", output:"\u222B", tex:null, ttype:CONST},
+{input:"dx",   tag:"mi", output:"{:d x:}", tex:null, ttype:DEFINITION},
+{input:"dy",   tag:"mi", output:"{:d y:}", tex:null, ttype:DEFINITION},
+{input:"dz",   tag:"mi", output:"{:d z:}", tex:null, ttype:DEFINITION},
+{input:"dt",   tag:"mi", output:"{:d t:}", tex:null, ttype:DEFINITION},
+{input:"oint", tag:"mo", output:"\u222E", tex:null, ttype:CONST},
+{input:"del",  tag:"mo", output:"\u2202", tex:"partial", ttype:CONST},
+{input:"grad", tag:"mo", output:"\u2207", tex:"nabla", ttype:CONST},
+{input:"+-",   tag:"mo", output:"\u00B1", tex:"pm", ttype:CONST},
+{input:"O/",   tag:"mo", output:"\u2205", tex:"emptyset", ttype:CONST},
+{input:"oo",   tag:"mo", output:"\u221E", tex:"infty", ttype:CONST},
+{input:"aleph", tag:"mo", output:"\u2135", tex:null, ttype:CONST},
+{input:"...",  tag:"mo", output:"...",    tex:"ldots", ttype:CONST},
+{input:":.",  tag:"mo", output:"\u2234",  tex:"therefore", ttype:CONST},
+{input:"/_",  tag:"mo", output:"\u2220",  tex:"angle", ttype:CONST},
+{input:"\\ ",  tag:"mo", output:"\u00A0", tex:null, ttype:CONST},
+{input:"quad", tag:"mo", output:"\u00A0\u00A0", tex:null, ttype:CONST},
+{input:"qquad", tag:"mo", output:"\u00A0\u00A0\u00A0\u00A0", tex:null, ttype:CONST},
+{input:"cdots", tag:"mo", output:"\u22EF", tex:null, ttype:CONST},
+{input:"vdots", tag:"mo", output:"\u22EE", tex:null, ttype:CONST},
+{input:"ddots", tag:"mo", output:"\u22F1", tex:null, ttype:CONST},
+{input:"diamond", tag:"mo", output:"\u22C4", tex:null, ttype:CONST},
+{input:"square", tag:"mo", output:"\u25A1", tex:null, ttype:CONST},
+{input:"|__", tag:"mo", output:"\u230A",  tex:"lfloor", ttype:CONST},
+{input:"__|", tag:"mo", output:"\u230B",  tex:"rfloor", ttype:CONST},
+{input:"|~", tag:"mo", output:"\u2308",  tex:"lceiling", ttype:CONST},
+{input:"~|", tag:"mo", output:"\u2309",  tex:"rceiling", ttype:CONST},
+{input:"CC",  tag:"mo", output:"\u2102", tex:null, ttype:CONST},
+{input:"NN",  tag:"mo", output:"\u2115", tex:null, ttype:CONST},
+{input:"QQ",  tag:"mo", output:"\u211A", tex:null, ttype:CONST},
+{input:"RR",  tag:"mo", output:"\u211D", tex:null, ttype:CONST},
+{input:"ZZ",  tag:"mo", output:"\u2124", tex:null, ttype:CONST},
+{input:"f",   tag:"mi", output:"f",      tex:null, ttype:UNARY, func:true},
+{input:"g",   tag:"mi", output:"g",      tex:null, ttype:UNARY, func:true},
+
+//standard functions
+{input:"lim",  tag:"mo", output:"lim", tex:null, ttype:UNDEROVER},
+{input:"Lim",  tag:"mo", output:"Lim", tex:null, ttype:UNDEROVER},
+{input:"sin",  tag:"mo", output:"sin", tex:null, ttype:UNARY, func:true},
+{input:"cos",  tag:"mo", output:"cos", tex:null, ttype:UNARY, func:true},
+{input:"tan",  tag:"mo", output:"tan", tex:null, ttype:UNARY, func:true},
+{input:"sinh", tag:"mo", output:"sinh", tex:null, ttype:UNARY, func:true},
+{input:"cosh", tag:"mo", output:"cosh", tex:null, ttype:UNARY, func:true},
+{input:"tanh", tag:"mo", output:"tanh", tex:null, ttype:UNARY, func:true},
+{input:"cot",  tag:"mo", output:"cot", tex:null, ttype:UNARY, func:true},
+{input:"sec",  tag:"mo", output:"sec", tex:null, ttype:UNARY, func:true},
+{input:"csc",  tag:"mo", output:"csc", tex:null, ttype:UNARY, func:true},
+{input:"log",  tag:"mo", output:"log", tex:null, ttype:UNARY, func:true},
+{input:"ln",   tag:"mo", output:"ln",  tex:null, ttype:UNARY, func:true},
+{input:"det",  tag:"mo", output:"det", tex:null, ttype:UNARY, func:true},
+{input:"dim",  tag:"mo", output:"dim", tex:null, ttype:CONST},
+{input:"mod",  tag:"mo", output:"mod", tex:null, ttype:CONST},
+{input:"gcd",  tag:"mo", output:"gcd", tex:null, ttype:UNARY, func:true},
+{input:"lcm",  tag:"mo", output:"lcm", tex:null, ttype:UNARY, func:true},
+{input:"lub",  tag:"mo", output:"lub", tex:null, ttype:CONST},
+{input:"glb",  tag:"mo", output:"glb", tex:null, ttype:CONST},
+{input:"min",  tag:"mo", output:"min", tex:null, ttype:UNDEROVER},
+{input:"max",  tag:"mo", output:"max", tex:null, ttype:UNDEROVER},
+
+//arrows
+{input:"uarr", tag:"mo", output:"\u2191", tex:"uparrow", ttype:CONST},
+{input:"darr", tag:"mo", output:"\u2193", tex:"downarrow", ttype:CONST},
+{input:"rarr", tag:"mo", output:"\u2192", tex:"rightarrow", ttype:CONST},
+{input:"->",   tag:"mo", output:"\u2192", tex:"to", ttype:CONST},
+{input:"|->",  tag:"mo", output:"\u21A6", tex:"mapsto", ttype:CONST},
+{input:"larr", tag:"mo", output:"\u2190", tex:"leftarrow", ttype:CONST},
+{input:"harr", tag:"mo", output:"\u2194", tex:"leftrightarrow", ttype:CONST},
+{input:"rArr", tag:"mo", output:"\u21D2", tex:"Rightarrow", ttype:CONST},
+{input:"lArr", tag:"mo", output:"\u21D0", tex:"Leftarrow", ttype:CONST},
+{input:"hArr", tag:"mo", output:"\u21D4", tex:"Leftrightarrow", ttype:CONST},
+
+//commands with argument
+AMsqrt, AMroot, AMfrac, AMdiv, AMover, AMsub, AMsup,
+{input:"hat", tag:"mover", output:"\u005E", tex:null, ttype:UNARY, acc:true},
+{input:"bar", tag:"mover", output:"\u00AF", tex:"overline", ttype:UNARY, acc:true},
+{input:"vec", tag:"mover", output:"\u2192", tex:null, ttype:UNARY, acc:true},
+{input:"dot", tag:"mover", output:".",      tex:null, ttype:UNARY, acc:true},
+{input:"ddot", tag:"mover", output:"..",    tex:null, ttype:UNARY, acc:true},
+{input:"ul", tag:"munder", output:"\u0332", tex:"underline", ttype:UNARY, acc:true},
+AMtext, AMmbox, AMquote,
+{input:"bb", tag:"mstyle", atname:"fontweight", atval:"bold", output:"bb", tex:null, ttype:UNARY},
+{input:"mathbf", tag:"mstyle", atname:"fontweight", atval:"bold", output:"mathbf", tex:null, ttype:UNARY},
+{input:"sf", tag:"mstyle", atname:"fontfamily", atval:"sans-serif", output:"sf", tex:null, ttype:UNARY},
+{input:"mathsf", tag:"mstyle", atname:"fontfamily", atval:"sans-serif", output:"mathsf", tex:null, ttype:UNARY},
+{input:"bbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", output:"bbb", tex:null, ttype:UNARY, codes:AMbbb},
+{input:"mathbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", output:"mathbb", tex:null, ttype:UNARY, codes:AMbbb},
+{input:"cc",  tag:"mstyle", atname:"mathvariant", atval:"script", output:"cc", tex:null, ttype:UNARY, codes:AMcal},
+{input:"mathcal", tag:"mstyle", atname:"mathvariant", atval:"script", output:"mathcal", tex:null, ttype:UNARY, codes:AMcal},
+{input:"tt",  tag:"mstyle", atname:"fontfamily", atval:"monospace", output:"tt", tex:null, ttype:UNARY},
+{input:"mathtt", tag:"mstyle", atname:"fontfamily", atval:"monospace", output:"mathtt", tex:null, ttype:UNARY},
+{input:"fr",  tag:"mstyle", atname:"mathvariant", atval:"fraktur", output:"fr", tex:null, ttype:UNARY, codes:AMfrk},
+{input:"mathfrak",  tag:"mstyle", atname:"mathvariant", atval:"fraktur", output:"mathfrak", tex:null, ttype:UNARY, codes:AMfrk}
+];
+
+function compareNames(s1,s2) {
+  if (s1.input > s2.input) return 1
+  else return -1;
+}
+
+var AMnames = []; //list of input symbols
+
+function AMinitSymbols() {
+  var texsymbols = [], i;
+  for (i=0; i<AMsymbols.length; i++)
+    if (AMsymbols[i].tex) 
+      texsymbols[texsymbols.length] = {input:AMsymbols[i].tex, 
+        tag:AMsymbols[i].tag, output:AMsymbols[i].output, ttype:AMsymbols[i].ttype};
+  AMsymbols = AMsymbols.concat(texsymbols);
+  AMsymbols.sort(compareNames);
+  for (i=0; i<AMsymbols.length; i++) AMnames[i] = AMsymbols[i].input;
+}
+
+var AMmathml = "http://www.w3.org/1998/Math/MathML";
+
+function AMcreateElementMathML(t) {
+  if (isIE) return document.createElement("m:"+t);
+  else return document.createElementNS(AMmathml,t);
+}
+
+function AMcreateMmlNode(t,frag) {
+//  var node = AMcreateElementMathML(name);
+  if (isIE) var node = document.createElement("m:"+t);
+  else var node = document.createElementNS(AMmathml,t);
+  node.appendChild(frag);
+  return node;
+}
+
+function define(oldstr,newstr) {
+  AMsymbols = AMsymbols.concat([{input:oldstr, tag:"mo", output:newstr, 
+                                 tex:null, ttype:DEFINITION}]);
+  AMsymbols.sort(compareNames);
+  for (i=0; i<AMsymbols.length; i++) AMnames[i] = AMsymbols[i].input;
+}
+
+function AMremoveCharsAndBlanks(str,n) {
+//remove n characters and any following blanks
+  var st;
+  if (str.charAt(n)=="\\" && str.charAt(n+1)!="\\" && str.charAt(n+1)!=" ") 
+    st = str.slice(n+1);
+  else st = str.slice(n);
+  for (var i=0; i<st.length && st.charCodeAt(i)<=32; i=i+1);
+  return st.slice(i);
+}
+
+function AMposition(arr, str, n) { 
+// return position >=n where str appears or would be inserted
+// assumes arr is sorted
+  if (n==0) {
+    var h,m;
+    n = -1;
+    h = arr.length;
+    while (n+1<h) {
+      m = (n+h) >> 1;
+      if (arr[m]<str) n = m; else h = m;
+    }
+    return h;
+  } else
+    for (var i=n; i<arr.length && arr[i]<str; i++);
+  return i; // i=arr.length || arr[i]>=str
+}
+
+function AMgetSymbol(str) {
+//return maximal initial substring of str that appears in names
+//return null if there is none
+  var k = 0; //new pos
+  var j = 0; //old pos
+  var mk; //match pos
+  var st;
+  var tagst;
+  var match = "";
+  var more = true;
+  for (var i=1; i<=str.length && more; i++) {
+    st = str.slice(0,i); //initial substring of length i
+    j = k;
+    k = AMposition(AMnames, st, j);
+    if (k<AMnames.length && str.slice(0,AMnames[k].length)==AMnames[k]){
+      match = AMnames[k];
+      mk = k;
+      i = match.length;
+    }
+    more = k<AMnames.length && str.slice(0,AMnames[k].length)>=AMnames[k];
+  }
+  AMpreviousSymbol=AMcurrentSymbol;
+  if (match!=""){
+    AMcurrentSymbol=AMsymbols[mk].ttype;
+    return AMsymbols[mk]; 
+  }
+// if str[0] is a digit or - return maxsubstring of digits.digits
+  AMcurrentSymbol=CONST;
+  k = 1;
+  st = str.slice(0,1);
+  var integ = true;
+  while ("0"<=st && st<="9" && k<=str.length) {
+    st = str.slice(k,k+1);
+    k++;
+  }
+  if (st == decimalsign) {
+    st = str.slice(k,k+1);
+    if ("0"<=st && st<="9") {
+      integ = false;
+      k++;
+      while ("0"<=st && st<="9" && k<=str.length) {
+        st = str.slice(k,k+1);
+        k++;
+      }
+    }
+  }
+  if ((integ && k>1) || k>2) {
+    st = str.slice(0,k-1);
+    tagst = "mn";
+  } else {
+    k = 2;
+    st = str.slice(0,1); //take 1 character
+    tagst = (("A">st || st>"Z") && ("a">st || st>"z")?"mo":"mi");
+  }
+  if (st=="-" && AMpreviousSymbol==INFIX) {
+    AMcurrentSymbol = INFIX;  //trick "/" into recognizing "-" on second parse
+    return {input:st, tag:tagst, output:st, ttype:UNARY, func:true};
+  }
+  return {input:st, tag:tagst, output:st, ttype:CONST};
+}
+
+function AMremoveBrackets(node) {
+  var st;
+  if (node.nodeName=="mrow") {
+    st = node.firstChild.firstChild.nodeValue;
+    if (st=="(" || st=="[" || st=="{") node.removeChild(node.firstChild);
+  }
+  if (node.nodeName=="mrow") {
+    st = node.lastChild.firstChild.nodeValue;
+    if (st==")" || st=="]" || st=="}") node.removeChild(node.lastChild);
+  }
+}
+
+/*Parsing ASCII math expressions with the following grammar
+v ::= [A-Za-z] | greek letters | numbers | other constant symbols
+u ::= sqrt | text | bb | other unary symbols for font commands
+b ::= frac | root | stackrel         binary symbols
+l ::= ( | [ | { | (: | {:            left brackets
+r ::= ) | ] | } | :) | :}            right brackets
+S ::= v | lEr | uS | bSS             Simple expression
+I ::= S_S | S^S | S_S^S | S          Intermediate expression
+E ::= IE | I/I                       Expression
+Each terminal symbol is translated into a corresponding mathml node.*/
+
+var AMnestingDepth,AMpreviousSymbol,AMcurrentSymbol;
+
+function AMparseSexpr(str) { //parses str and returns [node,tailstr]
+  var symbol, node, result, i, st,// rightvert = false,
+    newFrag = document.createDocumentFragment();
+  str = AMremoveCharsAndBlanks(str,0);
+  symbol = AMgetSymbol(str);             //either a token or a bracket or empty
+  if (symbol == null || symbol.ttype == RIGHTBRACKET && AMnestingDepth > 0) {
+    return [null,str];
+  }
+  if (symbol.ttype == DEFINITION) {
+    str = symbol.output+AMremoveCharsAndBlanks(str,symbol.input.length); 
+    symbol = AMgetSymbol(str);
+  }
+  switch (symbol.ttype) {
+  case UNDEROVER:
+  case CONST:
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    return [AMcreateMmlNode(symbol.tag,        //its a constant
+                             document.createTextNode(symbol.output)),str];
+  case LEFTBRACKET:   //read (expr+)
+    AMnestingDepth++;
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    result = AMparseExpr(str,true);
+    AMnestingDepth--;
+    if (typeof symbol.invisible == "boolean" && symbol.invisible) 
+      node = AMcreateMmlNode("mrow",result[0]);
+    else {
+      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
+      node = AMcreateMmlNode("mrow",node);
+      node.appendChild(result[0]);
+    }
+    return [node,result[1]];
+  case TEXT:
+      if (symbol!=AMquote) str = AMremoveCharsAndBlanks(str,symbol.input.length);
+      if (str.charAt(0)=="{") i=str.indexOf("}");
+      else if (str.charAt(0)=="(") i=str.indexOf(")");
+      else if (str.charAt(0)=="[") i=str.indexOf("]");
+      else if (symbol==AMquote) i=str.slice(1).indexOf("\"")+1;
+      else i = 0;
+      if (i==-1) i = str.length;
+      st = str.slice(1,i);
+      if (st.charAt(0) == " ") {
+        node = AMcreateElementMathML("mspace");
+        node.setAttribute("width","1ex");
+        newFrag.appendChild(node);
+      }
+      newFrag.appendChild(
+        AMcreateMmlNode(symbol.tag,document.createTextNode(st)));
+      if (st.charAt(st.length-1) == " ") {
+        node = AMcreateElementMathML("mspace");
+        node.setAttribute("width","1ex");
+        newFrag.appendChild(node);
+      }
+      str = AMremoveCharsAndBlanks(str,i+1);
+      return [AMcreateMmlNode("mrow",newFrag),str];
+  case UNARY:
+      str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+      result = AMparseSexpr(str);
+      if (result[0]==null) return [AMcreateMmlNode(symbol.tag,
+                             document.createTextNode(symbol.output)),str];
+      if (typeof symbol.func == "boolean" && symbol.func) { // functions hack
+        st = str.charAt(0);
+        if (st=="^" || st=="_" || st=="/" || st=="|" || st==",") {
+          return [AMcreateMmlNode(symbol.tag,
+                    document.createTextNode(symbol.output)),str];
+        } else {
+          node = AMcreateMmlNode("mrow",
+           AMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output)));
+          node.appendChild(result[0]);
+          return [node,result[1]];
+        }
+      }
+      AMremoveBrackets(result[0]);
+      if (symbol.input == "sqrt") {           // sqrt
+        return [AMcreateMmlNode(symbol.tag,result[0]),result[1]];
+      } else if (typeof symbol.acc == "boolean" && symbol.acc) {   // accent
+        node = AMcreateMmlNode(symbol.tag,result[0]);
+        node.appendChild(AMcreateMmlNode("mo",document.createTextNode(symbol.output)));
+        return [node,result[1]];
+      } else {                        // font change command
+        if (!isIE && typeof symbol.codes != "undefined") {
+          for (i=0; i<result[0].childNodes.length; i++)
+            if (result[0].childNodes[i].nodeName=="mi" || result[0].nodeName=="mi") {
+              st = (result[0].nodeName=="mi"?result[0].firstChild.nodeValue:
+                              result[0].childNodes[i].firstChild.nodeValue);
+              var newst = [];
+              for (var j=0; j<st.length; j++)
+                if (st.charCodeAt(j)>64 && st.charCodeAt(j)<91) newst = newst +
+                  String.fromCharCode(symbol.codes[st.charCodeAt(j)-65]);
+                else newst = newst + st.charAt(j);
+              if (result[0].nodeName=="mi")
+                result[0]=AMcreateElementMathML("mo").
+                          appendChild(document.createTextNode(newst));
+              else result[0].replaceChild(AMcreateElementMathML("mo").
+          appendChild(document.createTextNode(newst)),result[0].childNodes[i]);
+            }
+        }
+        node = AMcreateMmlNode(symbol.tag,result[0]);
+        node.setAttribute(symbol.atname,symbol.atval);
+        return [node,result[1]];
+      }
+  case BINARY:
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    result = AMparseSexpr(str);
+    if (result[0]==null) return [AMcreateMmlNode("mo",
+                           document.createTextNode(symbol.input)),str];
+    AMremoveBrackets(result[0]);
+    var result2 = AMparseSexpr(result[1]);
+    if (result2[0]==null) return [AMcreateMmlNode("mo",
+                           document.createTextNode(symbol.input)),str];
+    AMremoveBrackets(result2[0]);
+    if (symbol.input=="root" || symbol.input=="stackrel") 
+      newFrag.appendChild(result2[0]);
+    newFrag.appendChild(result[0]);
+    if (symbol.input=="frac") newFrag.appendChild(result2[0]);
+    return [AMcreateMmlNode(symbol.tag,newFrag),result2[1]];
+  case INFIX:
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    return [AMcreateMmlNode("mo",document.createTextNode(symbol.output)),str];
+  case SPACE:
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    node = AMcreateElementMathML("mspace");
+    node.setAttribute("width","1ex");
+    newFrag.appendChild(node);
+    newFrag.appendChild(
+      AMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output)));
+    node = AMcreateElementMathML("mspace");
+    node.setAttribute("width","1ex");
+    newFrag.appendChild(node);
+    return [AMcreateMmlNode("mrow",newFrag),str];
+  case LEFTRIGHT:
+//    if (rightvert) return [null,str]; else rightvert = true;
+    AMnestingDepth++;
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    result = AMparseExpr(str,false);
+    AMnestingDepth--;
+    var st = "";
+    if (result[0].lastChild!=null)
+      st = result[0].lastChild.firstChild.nodeValue;
+    if (st == "|") { // its an absolute value subterm
+      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
+      node = AMcreateMmlNode("mrow",node);
+      node.appendChild(result[0]);
+      return [node,result[1]];
+    } else { // the "|" is a \mid
+      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
+      node = AMcreateMmlNode("mrow",node);
+      return [node,str];
+    }
+  default:
+//alert("default");
+    str = AMremoveCharsAndBlanks(str,symbol.input.length); 
+    return [AMcreateMmlNode(symbol.tag,        //its a constant
+                             document.createTextNode(symbol.output)),str];
+  }
+}
+
+function AMparseIexpr(str) {
+  var symbol, sym1, sym2, node, result, underover;
+  str = AMremoveCharsAndBlanks(str,0);
+  sym1 = AMgetSymbol(str);
+  result = AMparseSexpr(str);
+  node = result[0];
+  str = result[1];
+  symbol = AMgetSymbol(str);
+  if (symbol.ttype == INFIX && symbol.input != "/") {
+    str = AMremoveCharsAndBlanks(str,symbol.input.length);
+//    if (symbol.input == "/") result = AMparseIexpr(str); else ...
+    result = AMparseSexpr(str);
+    if (result[0] == null) // show box in place of missing argument
+      result[0] = AMcreateMmlNode("mo",document.createTextNode("\u25A1"));
+    else AMremoveBrackets(result[0]);
+    str = result[1];
+//    if (symbol.input == "/") AMremoveBrackets(node);
+    if (symbol.input == "_") {
+      sym2 = AMgetSymbol(str);
+      underover = (sym1.ttype == UNDEROVER);
+      if (sym2.input == "^") {
+        str = AMremoveCharsAndBlanks(str,sym2.input.length);
+        var res2 = AMparseSexpr(str);
+        AMremoveBrackets(res2[0]);
+        str = res2[1];
+        node = AMcreateMmlNode((underover?"munderover":"msubsup"),node);
+        node.appendChild(result[0]);
+        node.appendChild(res2[0]);
+        node = AMcreateMmlNode("mrow",node); // so sum does not stretch
+      } else {
+        node = AMcreateMmlNode((underover?"munder":"msub"),node);
+        node.appendChild(result[0]);
+      }
+    } else {
+      node = AMcreateMmlNode(symbol.tag,node);
+      node.appendChild(result[0]);
+    }
+  }
+  return [node,str];
+}
+
+function AMparseExpr(str,rightbracket) {
+  var symbol, node, result, i, nodeList = [],
+  newFrag = document.createDocumentFragment();
+  do {
+    str = AMremoveCharsAndBlanks(str,0);
+    result = AMparseIexpr(str);
+    node = result[0];
+    str = result[1];
+    symbol = AMgetSymbol(str);
+    if (symbol.ttype == INFIX && symbol.input == "/") {
+      str = AMremoveCharsAndBlanks(str,symbol.input.length);
+      result = AMparseIexpr(str);
+      if (result[0] == null) // show box in place of missing argument
+        result[0] = AMcreateMmlNode("mo",document.createTextNode("\u25A1"));
+      else AMremoveBrackets(result[0]);
+      str = result[1];
+      AMremoveBrackets(node);
+      node = AMcreateMmlNode(symbol.tag,node);
+      node.appendChild(result[0]);
+      newFrag.appendChild(node);
+      symbol = AMgetSymbol(str);
+    } 
+    else if (node!=undefined) newFrag.appendChild(node);
+  } while ((symbol.ttype != RIGHTBRACKET && 
+           (symbol.ttype != LEFTRIGHT || rightbracket)
+           || AMnestingDepth == 0) && symbol!=null && symbol.output!="");
+  if (symbol.ttype == RIGHTBRACKET || symbol.ttype == LEFTRIGHT) {
+//    if (AMnestingDepth > 0) AMnestingDepth--;
+    var len = newFrag.childNodes.length;
+    if (len>0 && newFrag.childNodes[len-1].nodeName == "mrow" && len>1 &&
+      newFrag.childNodes[len-2].nodeName == "mo" &&
+      newFrag.childNodes[len-2].firstChild.nodeValue == ",") { //matrix
+      var right = newFrag.childNodes[len-1].lastChild.firstChild.nodeValue;
+      if (right==")" || right=="]") {
+        var left = newFrag.childNodes[len-1].firstChild.firstChild.nodeValue;
+        if (left=="(" && right==")" && symbol.output != "}" || 
+            left=="[" && right=="]") {
+        var pos = []; // positions of commas
+        var matrix = true;
+        var m = newFrag.childNodes.length;
+        for (i=0; matrix && i<m; i=i+2) {
+          pos[i] = [];
+          node = newFrag.childNodes[i];
+          if (matrix) matrix = node.nodeName=="mrow" && 
+            (i==m-1 || node.nextSibling.nodeName=="mo" && 
+            node.nextSibling.firstChild.nodeValue==",")&&
+            node.firstChild.firstChild.nodeValue==left &&
+            node.lastChild.firstChild.nodeValue==right;
+          if (matrix) 
+            for (var j=0; j<node.childNodes.length; j++)
+              if (node.childNodes[j].firstChild.nodeValue==",")
+                pos[i][pos[i].length]=j;
+          if (matrix && i>1) matrix = pos[i].length == pos[i-2].length;
+        }
+        if (matrix) {
+          var row, frag, n, k, table = document.createDocumentFragment();
+          for (i=0; i<m; i=i+2) {
+            row = document.createDocumentFragment();
+            frag = document.createDocumentFragment();
+            node = newFrag.firstChild; // <mrow>(-,-,...,-,-)</mrow>
+            n = node.childNodes.length;
+            k = 0;
+            node.removeChild(node.firstChild); //remove (
+            for (j=1; j<n-1; j++) {
+              if (typeof pos[i][k] != "undefined" && j==pos[i][k]){
+                node.removeChild(node.firstChild); //remove ,
+                row.appendChild(AMcreateMmlNode("mtd",frag));
+                k++;
+              } else frag.appendChild(node.firstChild);
+            }
+            row.appendChild(AMcreateMmlNode("mtd",frag));
+            if (newFrag.childNodes.length>2) {
+              newFrag.removeChild(newFrag.firstChild); //remove <mrow>)</mrow>
+              newFrag.removeChild(newFrag.firstChild); //remove <mo>,</mo>
+            }
+            table.appendChild(AMcreateMmlNode("mtr",row));
+          }
+          node = AMcreateMmlNode("mtable",table);
+          if (typeof symbol.invisible == "boolean" && symbol.invisible) node.setAttribute("columnalign","left");
+          newFrag.replaceChild(node,newFrag.firstChild);
+        }
+       }
+      }
+    }
+    str = AMremoveCharsAndBlanks(str,symbol.input.length);
+    if (typeof symbol.invisible != "boolean" || !symbol.invisible) {
+      node = AMcreateMmlNode("mo",document.createTextNode(symbol.output));
+      newFrag.appendChild(node);
+    }
+  }
+  return [newFrag,str];
+}
+
+function AMparseMath(str) {
+  var result, node = AMcreateElementMathML("mstyle");
+  if (mathcolor != "") node.setAttribute("mathcolor",mathcolor);
+  if (displaystyle) node.setAttribute("displaystyle","true");
+  if (mathfontfamily != "") node.setAttribute("fontfamily",mathfontfamily);
+  AMnestingDepth = 0;
+  node.appendChild(AMparseExpr(str.replace(/^\s+/g,""),false)[0]);
+  node = AMcreateMmlNode("math",node);
+  if (showasciiformulaonhover)                      //fixed by djhsu so newline
+    node.setAttribute("title",str.replace(/\s+/g," "));//does not show in Gecko
+  var fnode = AMcreateElementXHTML("span");
+  fnode.style.fontSize = mathfontsize;
+  if (mathfontfamily != "") fnode.style.fontFamily = mathfontfamily;
+  fnode.appendChild(node);
+  return fnode;
+}
+
+function AMstrarr2docFrag(arr, linebreaks) {
+  var newFrag=document.createDocumentFragment();
+  var expr = false;
+  for (var i=0; i<arr.length; i++) {
+    if (expr) newFrag.appendChild(AMparseMath(arr[i]));
+    else {
+      var arri = (linebreaks ? arr[i].split("\n\n") : [arr[i]]);
+      newFrag.appendChild(AMcreateElementXHTML("span").
+      appendChild(document.createTextNode(arri[0])));
+      for (var j=1; j<arri.length; j++) {
+        newFrag.appendChild(AMcreateElementXHTML("p"));
+        newFrag.appendChild(AMcreateElementXHTML("span").
+        appendChild(document.createTextNode(arri[j])));
+      }
+    }
+    expr = !expr;
+  }
+  return newFrag;
+}
+
+function AMautomathrec(str) {
+//formula is a space (or start of str) followed by a maximal sequence of *two* or more tokens, possibly separated by runs of digits and/or space.
+//tokens are single letters (except a, A, I) and ASCIIMathML tokens
+  var texcommand = "\\\\[a-zA-Z]+|\\\\\\s|";
+  var ambigAMtoken = "\\b(?:oo|lim|ln|int|oint|del|grad|aleph|prod|prop|sinh|cosh|tanh|cos|sec|pi|tt|fr|sf|sube|supe|sub|sup|det|mod|gcd|lcm|min|max|vec|ddot|ul|chi|eta|nu|mu)(?![a-z])|";
+  var englishAMtoken = "\\b(?:sum|ox|log|sin|tan|dim|hat|bar|dot)(?![a-z])|";
+  var secondenglishAMtoken = "|\\bI\\b|\\bin\\b|\\btext\\b"; // took if and or not out
+  var simpleAMtoken = "NN|ZZ|QQ|RR|CC|TT|AA|EE|sqrt|dx|dy|dz|dt|xx|vv|uu|nn|bb|cc|csc|cot|alpha|beta|delta|Delta|epsilon|gamma|Gamma|kappa|lambda|Lambda|omega|phi|Phi|Pi|psi|Psi|rho|sigma|Sigma|tau|theta|Theta|xi|Xi|zeta"; // uuu nnn?
+  var letter = "[a-zA-HJ-Z](?=(?:[^a-zA-Z]|$|"+ambigAMtoken+englishAMtoken+simpleAMtoken+"))|";
+  var token = letter+texcommand+"\\d+|[-()[\\]{}+=*&^_%@/<>,\\|!:;'~]|\\.(?!(?:\x20|$))|"+ambigAMtoken+englishAMtoken+simpleAMtoken;
+  var re = new RegExp("(^|\\s)((("+token+")\\s?)(("+token+secondenglishAMtoken+")\\s?)+)([,.?]?(?=\\s|$))","g");
+  str = str.replace(re," `$2`$7");
+  var arr = str.split(AMdelimiter1);
+  var re1 = new RegExp("(^|\\s)([b-zB-HJ-Z+*<>]|"+texcommand+ambigAMtoken+simpleAMtoken+")(\\s|\\n|$)","g");
+  var re2 = new RegExp("(^|\\s)([a-z]|"+texcommand+ambigAMtoken+simpleAMtoken+")([,.])","g"); // removed |\d+ for now
+  for (i=0; i<arr.length; i++)   //single nonenglish tokens
+    if (i%2==0) {
+      arr[i] = arr[i].replace(re1," `$2`$3");
+      arr[i] = arr[i].replace(re2," `$2`$3");
+      arr[i] = arr[i].replace(/([{}[\]])/,"`$1`");
+    }
+  str = arr.join(AMdelimiter1);
+  str = str.replace(/(\([a-zA-Z]{2,}.*?)\)`/g,"$1`)");  //fix parentheses
+  str = str.replace(/`(\((a\s|in\s))(.*?[a-zA-Z]{2,}\))/g,"$1`$3");  //fix parentheses
+  str = str.replace(/\sin`/g,"` in");
+  str = str.replace(/`(\(\w\)[,.]?(\s|\n|$))/g,"$1`");
+  str = str.replace(/`([0-9.]+|e.g)`(\\.)/gi,"$1$2");
+  str = str.replace(/`([0-9.]:)`/g,"$1");
+  return str;
+}
+
+function AMprocessNodeR(n, linebreaks) {
+  var mtch, str, arr, frg, i;
+  if (n.childNodes.length == 0) {
+   if ((n.nodeType!=8 || linebreaks) &&
+    n.parentNode.nodeName!="form" && n.parentNode.nodeName!="FORM" &&
+    n.parentNode.nodeName!="textarea" && n.parentNode.nodeName!="TEXTAREA" &&
+    n.parentNode.nodeName!="pre" && n.parentNode.nodeName!="PRE") {
+    str = n.nodeValue;
+    if (!(str == null)) {
+      str = str.replace(/\r\n\r\n/g,"\n\n");
+      str = str.replace(/\x20+/g," ");
+      str = str.replace(/\s*\r\n/g," ");
+      mtch = false;
+      str = str.replace(new RegExp(AMescape1, "g"),
+              function(){mtch = true; return "AMescape1"});
+      str = str.replace(/\\?end{?a?math}?/i,
+              function(){automathrecognize = false; mtch = true; return ""});
+      str = str.replace(/amath|\\begin{a?math}/i,
+              function(){automathrecognize = true; mtch = true; return ""});
+      arr = str.split(AMdelimiter1);
+      if (automathrecognize)
+        for (i=0; i<arr.length; i++)
+          if (i%2==0) arr[i] = AMautomathrec(arr[i]);
+      str = arr.join(AMdelimiter1);
+      arr = str.split(AMdelimiter1);
+      for (i=0; i<arr.length; i++) // this is a problem ************
+        arr[i]=arr[i].replace(/AMescape1/g,AMdelimiter1);
+      if (arr.length>1 || mtch) {
+        if (checkForMathML) {
+          checkForMathML = false;
+          var nd = AMisMathMLavailable();
+          AMnoMathML = nd != null;
+          if (AMnoMathML && notifyIfNoMathML) 
+            if (alertIfNoMathML)
+              alert("To view the ASCIIMathML notation use Internet Explorer 6 +\nMathPlayer (free from www.dessci.com)\n\
+                or Firefox/Mozilla/Netscape");
+            else AMbody.insertBefore(nd,AMbody.childNodes[0]);
+        }
+        if (!AMnoMathML) {
+          frg = AMstrarr2docFrag(arr,n.nodeType==8);
+          var len = frg.childNodes.length;
+          n.parentNode.replaceChild(frg,n);
+          return len-1;
+        } else return 0;
+      }
+    }
+   } else return 0;
+  } else if (n.nodeName!="math") {
+    for (i=0; i<n.childNodes.length; i++)
+      i += AMprocessNodeR(n.childNodes[i], linebreaks);
+  }
+  return 0;
+}
+
+function AMprocessNode(n, linebreaks, spanclassAM) {
+  var frag,st;
+  if (spanclassAM!=null) {
+    frag = document.getElementsByTagName("span")
+    for (var i=0;i<frag.length;i++)
+      if (frag[i].className == "AM")
+        AMprocessNodeR(frag[i],linebreaks);
+  } else {
+    try {
+      st = n.innerHTML; // look for AMdelimiter on page
+    } catch(err) {}
+    if (st==null || /amath|\\begin{a?math}/i.test(st) ||
+      st.indexOf(AMdelimiter1+" ")!=-1 || st.slice(-1)==AMdelimiter1 ||
+      st.indexOf(AMdelimiter1+"<")!=-1 || st.indexOf(AMdelimiter1+"\n")!=-1) {
+      AMprocessNodeR(n,linebreaks);
+    }
+  }
+  if (isIE) { //needed to match size and font of formula to surrounding text
+    frag = document.getElementsByTagName('math');
+    for (var i=0;i<frag.length;i++) frag[i].update()
+  }
+}
+
+var AMbody;
+var AMnoMathML = false, AMtranslated = false;
+
+function translate(spanclassAM) {
+  if (!AMtranslated) { // run this only once
+    AMtranslated = true;
+    AMbody = document.getElementsByTagName("body")[0];
+    var processN = document.getElementById(AMdocumentId);
+//    var processN = getElementsByClass(AMbody,"div",AMdocumentClass);
+    AMprocessNode((processN!=null?processN:AMbody), false, spanclassAM);
+  }
+}
+
+AMinitSymbols();
+
+/*
+LaTeXMathML.js
+==============
+
+Version 1.1, July 20, 2007 (c) modifications by Peter Jipsen
+
+(changes: renamed global variables from AM... to LM... so that
+LaTeXMathML and ASCIIMathML can be used simultaneously)
+
+Previous header notice:
+This file (Version 1.0), is due to Douglas Woodall, June 2006.
+It contains JavaScript functions to convert (most simple) LaTeX
+math notation to Presentation MathML.  It was obtained by
+downloading the file ASCIIMathML.js from
+	http://www1.chapman.edu/~jipsen/mathml/asciimathdownload/
+and modifying it so that it carries out ONLY those conversions
+that would be carried out in LaTeX.  A description of the original
+file, with examples, can be found at
+	www1.chapman.edu/~jipsen/mathml/asciimath.html
+	ASCIIMathML: Math on the web for everyone
+
+Here is the header notice from the original file:
+
+ASCIIMathML.js
+==============
+This file contains JavaScript functions to convert ASCII math notation
+to Presentation MathML. The conversion is done while the (X)HTML page
+loads, and should work with Firefox/Mozilla/Netscape 7+ and Internet
+Explorer 6+MathPlayer (http://www.dessci.com/en/products/mathplayer/).
+Just add the next line to your (X)HTML page with this file in the same folder:
+<script type="text/javascript" src="ASCIIMathML.js"></script>
+This is a convenient and inexpensive solution for authoring MathML.
+
+Version 1.4.7 Dec 15, 2005, (c) Peter Jipsen http://www.chapman.edu/~jipsen
+Latest version at http://www.chapman.edu/~jipsen/mathml/ASCIIMathML.js
+For changes see http://www.chapman.edu/~jipsen/mathml/asciimathchanges.txt
+If you use it on a webpage, please send the URL to jipsen@chapman.edu
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser
+General Public License (at http://www.gnu.org/license/lgpl.html)
+for more details.
+
+LaTeXMathML.js (ctd)
+==============
+
+Content between $...$ and $$...$$ is converted by this part of the file
+*/
+
+var LMcheckForMathML = true;   // check if browser can display MathML
+var LMnotifyIfNoMathML = true; // display note if no MathML capability
+var LMalertIfNoMathML = false;  // show alert box if no MathML capability
+var LMmathcolor = "";	     // "" (to inherit) or change to another color
+var LMmathfontfamily = "serif"; // change to "" to inherit (works in IE)
+                                // or another family (e.g. "arial")
+var LMshowasciiformulaonhover = true; // helps students learn LaTeX
+
+// all further global variables start with "LM"
+
+function LMcreateElementXHTML(t) {
+  if (isIE) return document.createElement(t);
+  else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
+}
+
+function LMnoMathMLNote() {
+  var nd = LMcreateElementXHTML("h3");
+  nd.setAttribute("align","center")
+  nd.appendChild(LMcreateElementXHTML("p"));
+  nd.appendChild(document.createTextNode("To view the "));
+  var an = LMcreateElementXHTML("a");
+  an.appendChild(document.createTextNode("LaTeXMathML"));
+  an.setAttribute("href","http://www.maths.nott.ac.uk/personal/drw/lm.html");
+  nd.appendChild(an);
+  nd.appendChild(document.createTextNode(" notation use Internet Explorer 6+")); 
+  an = LMcreateElementXHTML("a");
+  an.appendChild(document.createTextNode("MathPlayer"));
+  an.setAttribute("href","http://www.dessci.com/en/products/mathplayer/download.htm");
+  nd.appendChild(an);
+  nd.appendChild(document.createTextNode(" or Netscape/Mozilla/Firefox"));
+  nd.appendChild(LMcreateElementXHTML("p"));
+  return nd;
+}
+
+function LMisMathMLavailable() {
+  if (navigator.appName.slice(0,8)=="Netscape")
+    if (navigator.appVersion.slice(0,1)>="5") return null;
+    else return LMnoMathMLNote();
+  else if (navigator.appName.slice(0,9)=="Microsoft")
+    try {
+        var ActiveX = new ActiveXObject("MathPlayer.Factory.1");
+        return null;
+    } catch (e) {
+        return LMnoMathMLNote();
+    }
+  else return LMnoMathMLNote();
+}
+
+// character lists for Mozilla/Netscape fonts
+var LMcal = [0xEF35,0x212C,0xEF36,0xEF37,0x2130,0x2131,0xEF38,0x210B,0x2110,0xEF39,0xEF3A,0x2112,0x2133,0xEF3B,0xEF3C,0xEF3D,0xEF3E,0x211B,0xEF3F,0xEF40,0xEF41,0xEF42,0xEF43,0xEF44,0xEF45,0xEF46];
+var LMfrk = [0xEF5D,0xEF5E,0x212D,0xEF5F,0xEF60,0xEF61,0xEF62,0x210C,0x2111,0xEF63,0xEF64,0xEF65,0xEF66,0xEF67,0xEF68,0xEF69,0xEF6A,0x211C,0xEF6B,0xEF6C,0xEF6D,0xEF6E,0xEF6F,0xEF70,0xEF71,0x2128];
+var LMbbb = [0xEF8C,0xEF8D,0x2102,0xEF8E,0xEF8F,0xEF90,0xEF91,0x210D,0xEF92,0xEF93,0xEF94,0xEF95,0xEF96,0x2115,0xEF97,0x2119,0x211A,0x211D,0xEF98,0xEF99,0xEF9A,0xEF9B,0xEF9C,0xEF9D,0xEF9E,0x2124];
+
+//var CONST = 0, UNARY = 1, BINARY = 2, INFIX = 3, LEFTBRACKET = 4,
+//    RIGHTBRACKET = 5, SPACE = 6, UNDEROVER = 7, DEFINITION = 8, TEXT = 10, 
+var BIG = 11, LONG = 12, STRETCHY = 13, MATRIX = 14; // token types
+
+var LMsqrt = {input:"\\sqrt",	tag:"msqrt", output:"sqrt",	ttype:UNARY},
+  LMroot = {input:"\\root",	tag:"mroot", output:"root",	ttype:BINARY},
+  LMfrac = {input:"\\frac",	tag:"mfrac", output:"/",	ttype:BINARY},
+  LMover = {input:"\\stackrel", tag:"mover", output:"stackrel", ttype:BINARY},
+  LMatop = {input:"\\atop",	tag:"mfrac", output:"",		ttype:INFIX},
+  LMchoose = {input:"\\choose", tag:"mfrac", output:"",		ttype:INFIX},
+  LMsub  = {input:"_",		tag:"msub",  output:"_",	ttype:INFIX},
+  LMsup  = {input:"^",		tag:"msup",  output:"^",	ttype:INFIX},
+  LMtext = {input:"\\mathrm",	tag:"mtext", output:"text",	ttype:TEXT},
+  LMmbox = {input:"\\mbox",	tag:"mtext", output:"mbox",	ttype:TEXT};
+
+// Commented out by DRW to prevent 1/2 turning into a 2-line fraction
+// LMdiv   = {input:"/",	 tag:"mfrac", output:"/",    ttype:INFIX},
+// Commented out by DRW so that " prints literally in equations
+// LMquote = {input:"\"",	 tag:"mtext", output:"mbox", ttype:TEXT};
+
+var LMsymbols = [
+//Greek letters
+{input:"\\alpha",	tag:"mi", output:"\u03B1", ttype:CONST},
+{input:"\\beta",	tag:"mi", output:"\u03B2", ttype:CONST},
+{input:"\\gamma",	tag:"mi", output:"\u03B3", ttype:CONST},
+{input:"\\delta",	tag:"mi", output:"\u03B4", ttype:CONST},
+{input:"\\epsilon",	tag:"mi", output:"\u03B5", ttype:CONST},
+{input:"\\varepsilon",  tag:"mi", output:"\u025B", ttype:CONST},
+{input:"\\zeta",	tag:"mi", output:"\u03B6", ttype:CONST},
+{input:"\\eta",		tag:"mi", output:"\u03B7", ttype:CONST},
+{input:"\\theta",	tag:"mi", output:"\u03B8", ttype:CONST},
+{input:"\\vartheta",	tag:"mi", output:"\u03D1", ttype:CONST},
+{input:"\\iota",	tag:"mi", output:"\u03B9", ttype:CONST},
+{input:"\\kappa",	tag:"mi", output:"\u03BA", ttype:CONST},
+{input:"\\lambda",	tag:"mi", output:"\u03BB", ttype:CONST},
+{input:"\\mu",		tag:"mi", output:"\u03BC", ttype:CONST},
+{input:"\\nu",		tag:"mi", output:"\u03BD", ttype:CONST},
+{input:"\\xi",		tag:"mi", output:"\u03BE", ttype:CONST},
+{input:"\\pi",		tag:"mi", output:"\u03C0", ttype:CONST},
+{input:"\\varpi",	tag:"mi", output:"\u03D6", ttype:CONST},
+{input:"\\rho",		tag:"mi", output:"\u03C1", ttype:CONST},
+{input:"\\varrho",	tag:"mi", output:"\u03F1", ttype:CONST},
+{input:"\\varsigma",	tag:"mi", output:"\u03C2", ttype:CONST},
+{input:"\\sigma",	tag:"mi", output:"\u03C3", ttype:CONST},
+{input:"\\tau",		tag:"mi", output:"\u03C4", ttype:CONST},
+{input:"\\upsilon",	tag:"mi", output:"\u03C5", ttype:CONST},
+{input:"\\phi",		tag:"mi", output:"\u03C6", ttype:CONST},
+{input:"\\varphi",	tag:"mi", output:"\u03D5", ttype:CONST},
+{input:"\\chi",		tag:"mi", output:"\u03C7", ttype:CONST},
+{input:"\\psi",		tag:"mi", output:"\u03C8", ttype:CONST},
+{input:"\\omega",	tag:"mi", output:"\u03C9", ttype:CONST},
+{input:"\\Gamma",	tag:"mo", output:"\u0393", ttype:CONST},
+{input:"\\Delta",	tag:"mo", output:"\u0394", ttype:CONST},
+{input:"\\Theta",	tag:"mo", output:"\u0398", ttype:CONST},
+{input:"\\Lambda",	tag:"mo", output:"\u039B", ttype:CONST},
+{input:"\\Xi",		tag:"mo", output:"\u039E", ttype:CONST},
+{input:"\\Pi",		tag:"mo", output:"\u03A0", ttype:CONST},
+{input:"\\Sigma",	tag:"mo", output:"\u03A3", ttype:CONST},
+{input:"\\Upsilon",	tag:"mo", output:"\u03A5", ttype:CONST},
+{input:"\\Phi",		tag:"mo", output:"\u03A6", ttype:CONST},
+{input:"\\Psi",		tag:"mo", output:"\u03A8", ttype:CONST},
+{input:"\\Omega",	tag:"mo", output:"\u03A9", ttype:CONST},
+
+//fractions
+{input:"\\frac12",	tag:"mo", output:"\u00BD", ttype:CONST},
+{input:"\\frac14",	tag:"mo", output:"\u00BC", ttype:CONST},
+{input:"\\frac34",	tag:"mo", output:"\u00BE", ttype:CONST},
+{input:"\\frac13",	tag:"mo", output:"\u2153", ttype:CONST},
+{input:"\\frac23",	tag:"mo", output:"\u2154", ttype:CONST},
+{input:"\\frac15",	tag:"mo", output:"\u2155", ttype:CONST},
+{input:"\\frac25",	tag:"mo", output:"\u2156", ttype:CONST},
+{input:"\\frac35",	tag:"mo", output:"\u2157", ttype:CONST},
+{input:"\\frac45",	tag:"mo", output:"\u2158", ttype:CONST},
+{input:"\\frac16",	tag:"mo", output:"\u2159", ttype:CONST},
+{input:"\\frac56",	tag:"mo", output:"\u215A", ttype:CONST},
+{input:"\\frac18",	tag:"mo", output:"\u215B", ttype:CONST},
+{input:"\\frac38",	tag:"mo", output:"\u215C", ttype:CONST},
+{input:"\\frac58",	tag:"mo", output:"\u215D", ttype:CONST},
+{input:"\\frac78",	tag:"mo", output:"\u215E", ttype:CONST},
+
+//binary operation symbols
+{input:"\\pm",		tag:"mo", output:"\u00B1", ttype:CONST},
+{input:"\\mp",		tag:"mo", output:"\u2213", ttype:CONST},
+{input:"\\triangleleft",tag:"mo", output:"\u22B2", ttype:CONST},
+{input:"\\triangleright",tag:"mo",output:"\u22B3", ttype:CONST},
+{input:"\\cdot",	tag:"mo", output:"\u22C5", ttype:CONST},
+{input:"\\star",	tag:"mo", output:"\u22C6", ttype:CONST},
+{input:"\\ast",		tag:"mo", output:"\u002A", ttype:CONST},
+{input:"\\times",	tag:"mo", output:"\u00D7", ttype:CONST},
+{input:"\\div",		tag:"mo", output:"\u00F7", ttype:CONST},
+{input:"\\circ",	tag:"mo", output:"\u2218", ttype:CONST},
+//{input:"\\bullet",	  tag:"mo", output:"\u2219", ttype:CONST},
+{input:"\\bullet",	tag:"mo", output:"\u2022", ttype:CONST},
+{input:"\\oplus",	tag:"mo", output:"\u2295", ttype:CONST},
+{input:"\\ominus",	tag:"mo", output:"\u2296", ttype:CONST},
+{input:"\\otimes",	tag:"mo", output:"\u2297", ttype:CONST},
+{input:"\\bigcirc",	tag:"mo", output:"\u25CB", ttype:CONST},
+{input:"\\oslash",	tag:"mo", output:"\u2298", ttype:CONST},
+{input:"\\odot",	tag:"mo", output:"\u2299", ttype:CONST},
+{input:"\\land",	tag:"mo", output:"\u2227", ttype:CONST},
+{input:"\\wedge",	tag:"mo", output:"\u2227", ttype:CONST},
+{input:"\\lor",		tag:"mo", output:"\u2228", ttype:CONST},
+{input:"\\vee",		tag:"mo", output:"\u2228", ttype:CONST},
+{input:"\\cap",		tag:"mo", output:"\u2229", ttype:CONST},
+{input:"\\cup",		tag:"mo", output:"\u222A", ttype:CONST},
+{input:"\\sqcap",	tag:"mo", output:"\u2293", ttype:CONST},
+{input:"\\sqcup",	tag:"mo", output:"\u2294", ttype:CONST},
+{input:"\\uplus",	tag:"mo", output:"\u228E", ttype:CONST},
+{input:"\\amalg",	tag:"mo", output:"\u2210", ttype:CONST},
+{input:"\\bigtriangleup",tag:"mo",output:"\u25B3", ttype:CONST},
+{input:"\\bigtriangledown",tag:"mo",output:"\u25BD", ttype:CONST},
+{input:"\\dag",		tag:"mo", output:"\u2020", ttype:CONST},
+{input:"\\dagger",	tag:"mo", output:"\u2020", ttype:CONST},
+{input:"\\ddag",	tag:"mo", output:"\u2021", ttype:CONST},
+{input:"\\ddagger",	tag:"mo", output:"\u2021", ttype:CONST},
+{input:"\\lhd",		tag:"mo", output:"\u22B2", ttype:CONST},
+{input:"\\rhd",		tag:"mo", output:"\u22B3", ttype:CONST},
+{input:"\\unlhd",	tag:"mo", output:"\u22B4", ttype:CONST},
+{input:"\\unrhd",	tag:"mo", output:"\u22B5", ttype:CONST},
+
+
+//BIG Operators
+{input:"\\sum",		tag:"mo", output:"\u2211", ttype:UNDEROVER},
+{input:"\\prod",	tag:"mo", output:"\u220F", ttype:UNDEROVER},
+{input:"\\bigcap",	tag:"mo", output:"\u22C2", ttype:UNDEROVER},
+{input:"\\bigcup",	tag:"mo", output:"\u22C3", ttype:UNDEROVER},
+{input:"\\bigwedge",	tag:"mo", output:"\u22C0", ttype:UNDEROVER},
+{input:"\\bigvee",	tag:"mo", output:"\u22C1", ttype:UNDEROVER},
+{input:"\\bigsqcap",	tag:"mo", output:"\u2A05", ttype:UNDEROVER},
+{input:"\\bigsqcup",	tag:"mo", output:"\u2A06", ttype:UNDEROVER},
+{input:"\\coprod",	tag:"mo", output:"\u2210", ttype:UNDEROVER},
+{input:"\\bigoplus",	tag:"mo", output:"\u2A01", ttype:UNDEROVER},
+{input:"\\bigotimes",	tag:"mo", output:"\u2A02", ttype:UNDEROVER},
+{input:"\\bigodot",	tag:"mo", output:"\u2A00", ttype:UNDEROVER},
+{input:"\\biguplus",	tag:"mo", output:"\u2A04", ttype:UNDEROVER},
+{input:"\\int",		tag:"mo", output:"\u222B", ttype:CONST},
+{input:"\\oint",	tag:"mo", output:"\u222E", ttype:CONST},
+
+//binary relation symbols
+{input:":=",		tag:"mo", output:":=",	   ttype:CONST},
+{input:"\\lt",		tag:"mo", output:"<",	   ttype:CONST},
+{input:"\\gt",		tag:"mo", output:">",	   ttype:CONST},
+{input:"\\ne",		tag:"mo", output:"\u2260", ttype:CONST},
+{input:"\\neq",		tag:"mo", output:"\u2260", ttype:CONST},
+{input:"\\le",		tag:"mo", output:"\u2264", ttype:CONST},
+{input:"\\leq",		tag:"mo", output:"\u2264", ttype:CONST},
+{input:"\\leqslant",	tag:"mo", output:"\u2264", ttype:CONST},
+{input:"\\ge",		tag:"mo", output:"\u2265", ttype:CONST},
+{input:"\\geq",		tag:"mo", output:"\u2265", ttype:CONST},
+{input:"\\geqslant",	tag:"mo", output:"\u2265", ttype:CONST},
+{input:"\\equiv",	tag:"mo", output:"\u2261", ttype:CONST},
+{input:"\\ll",		tag:"mo", output:"\u226A", ttype:CONST},
+{input:"\\gg",		tag:"mo", output:"\u226B", ttype:CONST},
+{input:"\\doteq",	tag:"mo", output:"\u2250", ttype:CONST},
+{input:"\\prec",	tag:"mo", output:"\u227A", ttype:CONST},
+{input:"\\succ",	tag:"mo", output:"\u227B", ttype:CONST},
+{input:"\\preceq",	tag:"mo", output:"\u227C", ttype:CONST},
+{input:"\\succeq",	tag:"mo", output:"\u227D", ttype:CONST},
+{input:"\\subset",	tag:"mo", output:"\u2282", ttype:CONST},
+{input:"\\supset",	tag:"mo", output:"\u2283", ttype:CONST},
+{input:"\\subseteq",	tag:"mo", output:"\u2286", ttype:CONST},
+{input:"\\supseteq",	tag:"mo", output:"\u2287", ttype:CONST},
+{input:"\\sqsubset",	tag:"mo", output:"\u228F", ttype:CONST},
+{input:"\\sqsupset",	tag:"mo", output:"\u2290", ttype:CONST},
+{input:"\\sqsubseteq",  tag:"mo", output:"\u2291", ttype:CONST},
+{input:"\\sqsupseteq",  tag:"mo", output:"\u2292", ttype:CONST},
+{input:"\\sim",		tag:"mo", output:"\u223C", ttype:CONST},
+{input:"\\simeq",	tag:"mo", output:"\u2243", ttype:CONST},
+{input:"\\approx",	tag:"mo", output:"\u2248", ttype:CONST},
+{input:"\\cong",	tag:"mo", output:"\u2245", ttype:CONST},
+{input:"\\Join",	tag:"mo", output:"\u22C8", ttype:CONST},
+{input:"\\bowtie",	tag:"mo", output:"\u22C8", ttype:CONST},
+{input:"\\in",		tag:"mo", output:"\u2208", ttype:CONST},
+{input:"\\ni",		tag:"mo", output:"\u220B", ttype:CONST},
+{input:"\\owns",	tag:"mo", output:"\u220B", ttype:CONST},
+{input:"\\propto",	tag:"mo", output:"\u221D", ttype:CONST},
+{input:"\\vdash",	tag:"mo", output:"\u22A2", ttype:CONST},
+{input:"\\dashv",	tag:"mo", output:"\u22A3", ttype:CONST},
+{input:"\\models",	tag:"mo", output:"\u22A8", ttype:CONST},
+{input:"\\perp",	tag:"mo", output:"\u22A5", ttype:CONST},
+{input:"\\smile",	tag:"mo", output:"\u2323", ttype:CONST},
+{input:"\\frown",	tag:"mo", output:"\u2322", ttype:CONST},
+{input:"\\asymp",	tag:"mo", output:"\u224D", ttype:CONST},
+{input:"\\notin",	tag:"mo", output:"\u2209", ttype:CONST},
+
+//matrices
+{input:"\\begin{eqnarray}",	output:"X",	ttype:MATRIX, invisible:true},
+{input:"\\begin{array}",	output:"X",	ttype:MATRIX, invisible:true},
+{input:"\\\\",			output:"}&{",	ttype:DEFINITION},
+{input:"\\end{eqnarray}",	output:"}}",	ttype:DEFINITION},
+{input:"\\end{array}",		output:"}}",	ttype:DEFINITION},
+
+//grouping and literal brackets -- ieval is for IE
+{input:"\\big",	   tag:"mo", output:"X", atval:"1.2", ieval:"2.2", ttype:BIG},
+{input:"\\Big",	   tag:"mo", output:"X", atval:"1.6", ieval:"2.6", ttype:BIG},
+{input:"\\bigg",   tag:"mo", output:"X", atval:"2.2", ieval:"3.2", ttype:BIG},
+{input:"\\Bigg",   tag:"mo", output:"X", atval:"2.9", ieval:"3.9", ttype:BIG},
+{input:"\\left",   tag:"mo", output:"X", ttype:LEFTBRACKET},
+{input:"\\right",  tag:"mo", output:"X", ttype:RIGHTBRACKET},
+{input:"{",	   output:"{", ttype:LEFTBRACKET,  invisible:true},
+{input:"}",	   output:"}", ttype:RIGHTBRACKET, invisible:true},
+
+{input:"(",	   tag:"mo", output:"(",      atval:"1", ttype:STRETCHY},
+{input:"[",	   tag:"mo", output:"[",      atval:"1", ttype:STRETCHY},
+{input:"\\lbrack", tag:"mo", output:"[",      atval:"1", ttype:STRETCHY},
+{input:"\\{",	   tag:"mo", output:"{",      atval:"1", ttype:STRETCHY},
+{input:"\\lbrace", tag:"mo", output:"{",      atval:"1", ttype:STRETCHY},
+{input:"\\langle", tag:"mo", output:"\u2329", atval:"1", ttype:STRETCHY},
+{input:"\\lfloor", tag:"mo", output:"\u230A", atval:"1", ttype:STRETCHY},
+{input:"\\lceil",  tag:"mo", output:"\u2308", atval:"1", ttype:STRETCHY},
+
+// rtag:"mi" causes space to be inserted before a following sin, cos, etc.
+// (see function LMparseExpr() )
+{input:")",	  tag:"mo",output:")",	    rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"]",	  tag:"mo",output:"]",	    rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"\\rbrack",tag:"mo",output:"]",	    rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"\\}",	  tag:"mo",output:"}",	    rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"\\rbrace",tag:"mo",output:"}",	    rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"\\rangle",tag:"mo",output:"\u232A", rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"\\rfloor",tag:"mo",output:"\u230B", rtag:"mi",atval:"1",ttype:STRETCHY},
+{input:"\\rceil", tag:"mo",output:"\u2309", rtag:"mi",atval:"1",ttype:STRETCHY},
+
+// "|", "\\|", "\\vert" and "\\Vert" modified later: lspace = rspace = 0em
+{input:"|",		tag:"mo", output:"\u2223", atval:"1", ttype:STRETCHY},
+{input:"\\|",		tag:"mo", output:"\u2225", atval:"1", ttype:STRETCHY},
+{input:"\\vert",	tag:"mo", output:"\u2223", atval:"1", ttype:STRETCHY},
+{input:"\\Vert",	tag:"mo", output:"\u2225", atval:"1", ttype:STRETCHY},
+{input:"\\mid",		tag:"mo", output:"\u2223", atval:"1", ttype:STRETCHY},
+{input:"\\parallel",	tag:"mo", output:"\u2225", atval:"1", ttype:STRETCHY},
+{input:"/",		tag:"mo", output:"/",	atval:"1.01", ttype:STRETCHY},
+{input:"\\backslash",	tag:"mo", output:"\u2216", atval:"1", ttype:STRETCHY},
+{input:"\\setminus",	tag:"mo", output:"\\",	   ttype:CONST},
+
+//miscellaneous symbols
+{input:"\\!",	  tag:"mspace", atname:"width", atval:"-0.167em", ttype:SPACE},
+{input:"\\,",	  tag:"mspace", atname:"width", atval:"0.167em", ttype:SPACE},
+{input:"\\>",	  tag:"mspace", atname:"width", atval:"0.222em", ttype:SPACE},
+{input:"\\:",	  tag:"mspace", atname:"width", atval:"0.222em", ttype:SPACE},
+{input:"\\;",	  tag:"mspace", atname:"width", atval:"0.278em", ttype:SPACE},
+{input:"~",	  tag:"mspace", atname:"width", atval:"0.333em", ttype:SPACE},
+{input:"\\quad",  tag:"mspace", atname:"width", atval:"1em", ttype:SPACE},
+{input:"\\qquad", tag:"mspace", atname:"width", atval:"2em", ttype:SPACE},
+//{input:"{}",		  tag:"mo", output:"\u200B", ttype:CONST}, // zero-width
+{input:"\\prime",	tag:"mo", output:"\u2032", ttype:CONST},
+{input:"'",		tag:"mo", output:"\u02B9", ttype:CONST},
+{input:"''",		tag:"mo", output:"\u02BA", ttype:CONST},
+{input:"'''",		tag:"mo", output:"\u2034", ttype:CONST},
+{input:"''''",		tag:"mo", output:"\u2057", ttype:CONST},
+{input:"\\ldots",	tag:"mo", output:"\u2026", ttype:CONST},
+{input:"\\cdots",	tag:"mo", output:"\u22EF", ttype:CONST},
+{input:"\\vdots",	tag:"mo", output:"\u22EE", ttype:CONST},
+{input:"\\ddots",	tag:"mo", output:"\u22F1", ttype:CONST},
+{input:"\\forall",	tag:"mo", output:"\u2200", ttype:CONST},
+{input:"\\exists",	tag:"mo", output:"\u2203", ttype:CONST},
+{input:"\\Re",		tag:"mo", output:"\u211C", ttype:CONST},
+{input:"\\Im",		tag:"mo", output:"\u2111", ttype:CONST},
+{input:"\\aleph",	tag:"mo", output:"\u2135", ttype:CONST},
+{input:"\\hbar",	tag:"mo", output:"\u210F", ttype:CONST},
+{input:"\\ell",		tag:"mo", output:"\u2113", ttype:CONST},
+{input:"\\wp",		tag:"mo", output:"\u2118", ttype:CONST},
+{input:"\\emptyset",	tag:"mo", output:"\u2205", ttype:CONST},
+{input:"\\infty",	tag:"mo", output:"\u221E", ttype:CONST},
+{input:"\\surd",	tag:"mo", output:"\\sqrt{}", ttype:DEFINITION},
+{input:"\\partial",	tag:"mo", output:"\u2202", ttype:CONST},
+{input:"\\nabla",	tag:"mo", output:"\u2207", ttype:CONST},
+{input:"\\triangle",	tag:"mo", output:"\u25B3", ttype:CONST},
+{input:"\\therefore",	tag:"mo", output:"\u2234", ttype:CONST},
+{input:"\\angle",	tag:"mo", output:"\u2220", ttype:CONST},
+//{input:"\\\\ ",	  tag:"mo", output:"\u00A0", ttype:CONST},
+{input:"\\diamond",	tag:"mo", output:"\u22C4", ttype:CONST},
+//{input:"\\Diamond",	  tag:"mo", output:"\u25CA", ttype:CONST},
+{input:"\\Diamond",	tag:"mo", output:"\u25C7", ttype:CONST},
+{input:"\\neg",		tag:"mo", output:"\u00AC", ttype:CONST},
+{input:"\\lnot",	tag:"mo", output:"\u00AC", ttype:CONST},
+{input:"\\bot",		tag:"mo", output:"\u22A5", ttype:CONST},
+{input:"\\top",		tag:"mo", output:"\u22A4", ttype:CONST},
+{input:"\\square",	tag:"mo", output:"\u25AB", ttype:CONST},
+{input:"\\Box",		tag:"mo", output:"\u25A1", ttype:CONST},
+{input:"\\wr",		tag:"mo", output:"\u2240", ttype:CONST},
+
+//standard functions
+//Note UNDEROVER *must* have tag:"mo" to work properly
+{input:"\\arccos", tag:"mi", output:"arccos", ttype:UNARY, func:true},
+{input:"\\arcsin", tag:"mi", output:"arcsin", ttype:UNARY, func:true},
+{input:"\\arctan", tag:"mi", output:"arctan", ttype:UNARY, func:true},
+{input:"\\arg",	   tag:"mi", output:"arg",    ttype:UNARY, func:true},
+{input:"\\cos",	   tag:"mi", output:"cos",    ttype:UNARY, func:true},
+{input:"\\cosh",   tag:"mi", output:"cosh",   ttype:UNARY, func:true},
+{input:"\\cot",	   tag:"mi", output:"cot",    ttype:UNARY, func:true},
+{input:"\\coth",   tag:"mi", output:"coth",   ttype:UNARY, func:true},
+{input:"\\csc",	   tag:"mi", output:"csc",    ttype:UNARY, func:true},
+{input:"\\deg",	   tag:"mi", output:"deg",    ttype:UNARY, func:true},
+{input:"\\det",	   tag:"mi", output:"det",    ttype:UNARY, func:true},
+{input:"\\dim",	   tag:"mi", output:"dim",    ttype:UNARY, func:true}, //CONST?
+{input:"\\exp",	   tag:"mi", output:"exp",    ttype:UNARY, func:true},
+{input:"\\gcd",	   tag:"mi", output:"gcd",    ttype:UNARY, func:true}, //CONST?
+{input:"\\hom",	   tag:"mi", output:"hom",    ttype:UNARY, func:true},
+{input:"\\inf",	      tag:"mo", output:"inf",	 ttype:UNDEROVER},
+{input:"\\ker",	   tag:"mi", output:"ker",    ttype:UNARY, func:true},
+{input:"\\lg",	   tag:"mi", output:"lg",     ttype:UNARY, func:true},
+{input:"\\lim",	      tag:"mo", output:"lim",	 ttype:UNDEROVER},
+{input:"\\liminf",    tag:"mo", output:"liminf", ttype:UNDEROVER},
+{input:"\\limsup",    tag:"mo", output:"limsup", ttype:UNDEROVER},
+{input:"\\ln",	   tag:"mi", output:"ln",     ttype:UNARY, func:true},
+{input:"\\log",	   tag:"mi", output:"log",    ttype:UNARY, func:true},
+{input:"\\max",	      tag:"mo", output:"max",	 ttype:UNDEROVER},
+{input:"\\min",	      tag:"mo", output:"min",	 ttype:UNDEROVER},
+{input:"\\Pr",	   tag:"mi", output:"Pr",     ttype:UNARY, func:true},
+{input:"\\sec",	   tag:"mi", output:"sec",    ttype:UNARY, func:true},
+{input:"\\sin",	   tag:"mi", output:"sin",    ttype:UNARY, func:true},
+{input:"\\sinh",   tag:"mi", output:"sinh",   ttype:UNARY, func:true},
+{input:"\\sup",	      tag:"mo", output:"sup",	 ttype:UNDEROVER},
+{input:"\\tan",	   tag:"mi", output:"tan",    ttype:UNARY, func:true},
+{input:"\\tanh",   tag:"mi", output:"tanh",   ttype:UNARY, func:true},
+
+//arrows
+{input:"\\gets",		tag:"mo", output:"\u2190", ttype:CONST},
+{input:"\\leftarrow",		tag:"mo", output:"\u2190", ttype:CONST},
+{input:"\\to",			tag:"mo", output:"\u2192", ttype:CONST},
+{input:"\\rightarrow",		tag:"mo", output:"\u2192", ttype:CONST},
+{input:"\\leftrightarrow",	tag:"mo", output:"\u2194", ttype:CONST},
+{input:"\\uparrow",		tag:"mo", output:"\u2191", ttype:CONST},
+{input:"\\downarrow",		tag:"mo", output:"\u2193", ttype:CONST},
+{input:"\\updownarrow",		tag:"mo", output:"\u2195", ttype:CONST},
+{input:"\\Leftarrow",		tag:"mo", output:"\u21D0", ttype:CONST},
+{input:"\\Rightarrow",		tag:"mo", output:"\u21D2", ttype:CONST},
+{input:"\\Leftrightarrow",	tag:"mo", output:"\u21D4", ttype:CONST},
+{input:"\\iff", tag:"mo", output:"~\\Longleftrightarrow~", ttype:DEFINITION},
+{input:"\\Uparrow",		tag:"mo", output:"\u21D1", ttype:CONST},
+{input:"\\Downarrow",		tag:"mo", output:"\u21D3", ttype:CONST},
+{input:"\\Updownarrow",		tag:"mo", output:"\u21D5", ttype:CONST},
+{input:"\\mapsto",		tag:"mo", output:"\u21A6", ttype:CONST},
+{input:"\\longleftarrow",	tag:"mo", output:"\u2190", ttype:LONG},
+{input:"\\longrightarrow",	tag:"mo", output:"\u2192", ttype:LONG},
+{input:"\\longleftrightarrow",	tag:"mo", output:"\u2194", ttype:LONG},
+{input:"\\Longleftarrow",	tag:"mo", output:"\u21D0", ttype:LONG},
+{input:"\\Longrightarrow",	tag:"mo", output:"\u21D2", ttype:LONG},
+{input:"\\Longleftrightarrow",  tag:"mo", output:"\u21D4", ttype:LONG},
+{input:"\\longmapsto",		tag:"mo", output:"\u21A6", ttype:CONST},
+							// disaster if LONG
+
+//commands with argument
+LMsqrt, LMroot, LMfrac, LMover, LMsub, LMsup, LMtext, LMmbox, LMatop, LMchoose,
+//LMdiv, LMquote,
+
+//diacritical marks
+{input:"\\acute",	tag:"mover",  output:"\u00B4", ttype:UNARY, acc:true},
+//{input:"\\acute",	  tag:"mover",  output:"\u0317", ttype:UNARY, acc:true},
+//{input:"\\acute",	  tag:"mover",  output:"\u0301", ttype:UNARY, acc:true},
+//{input:"\\grave",	  tag:"mover",  output:"\u0300", ttype:UNARY, acc:true},
+//{input:"\\grave",	  tag:"mover",  output:"\u0316", ttype:UNARY, acc:true},
+{input:"\\grave",	tag:"mover",  output:"\u0060", ttype:UNARY, acc:true},
+{input:"\\breve",	tag:"mover",  output:"\u02D8", ttype:UNARY, acc:true},
+{input:"\\check",	tag:"mover",  output:"\u02C7", ttype:UNARY, acc:true},
+{input:"\\dot",		tag:"mover",  output:".",      ttype:UNARY, acc:true},
+{input:"\\ddot",	tag:"mover",  output:"..",     ttype:UNARY, acc:true},
+//{input:"\\ddot",	  tag:"mover",  output:"\u00A8", ttype:UNARY, acc:true},
+{input:"\\mathring",	tag:"mover",  output:"\u00B0", ttype:UNARY, acc:true},
+{input:"\\vec",		tag:"mover",  output:"\u20D7", ttype:UNARY, acc:true},
+{input:"\\overrightarrow",tag:"mover",output:"\u20D7", ttype:UNARY, acc:true},
+{input:"\\overleftarrow",tag:"mover", output:"\u20D6", ttype:UNARY, acc:true},
+{input:"\\hat",		tag:"mover",  output:"\u005E", ttype:UNARY, acc:true},
+{input:"\\widehat",	tag:"mover",  output:"\u0302", ttype:UNARY, acc:true},
+{input:"\\tilde",	tag:"mover",  output:"~",      ttype:UNARY, acc:true},
+//{input:"\\tilde",	  tag:"mover",  output:"\u0303", ttype:UNARY, acc:true},
+{input:"\\widetilde",	tag:"mover",  output:"\u02DC", ttype:UNARY, acc:true},
+{input:"\\bar",		tag:"mover",  output:"\u203E", ttype:UNARY, acc:true},
+{input:"\\overbrace",	tag:"mover",  output:"\u23B4", ttype:UNARY, acc:true},
+{input:"\\overline",	tag:"mover",  output:"\u00AF", ttype:UNARY, acc:true},
+{input:"\\underbrace",  tag:"munder", output:"\u23B5", ttype:UNARY, acc:true},
+{input:"\\underline",	tag:"munder", output:"\u00AF", ttype:UNARY, acc:true},
+//{input:"underline",	tag:"munder", output:"\u0332", ttype:UNARY, acc:true},
+
+//typestyles and fonts
+{input:"\\displaystyle",tag:"mstyle",atname:"displaystyle",atval:"true", ttype:UNARY},
+{input:"\\textstyle",tag:"mstyle",atname:"displaystyle",atval:"false", ttype:UNARY},
+{input:"\\scriptstyle",tag:"mstyle",atname:"scriptlevel",atval:"1", ttype:UNARY},
+{input:"\\scriptscriptstyle",tag:"mstyle",atname:"scriptlevel",atval:"2", ttype:UNARY},
+{input:"\\textrm", tag:"mstyle", output:"\\mathrm", ttype: DEFINITION},
+{input:"\\mathbf", tag:"mstyle", atname:"mathvariant", atval:"bold", ttype:UNARY},
+{input:"\\textbf", tag:"mstyle", atname:"mathvariant", atval:"bold", ttype:UNARY},
+{input:"\\mathit", tag:"mstyle", atname:"mathvariant", atval:"italic", ttype:UNARY},
+{input:"\\textit", tag:"mstyle", atname:"mathvariant", atval:"italic", ttype:UNARY},
+{input:"\\mathtt", tag:"mstyle", atname:"mathvariant", atval:"monospace", ttype:UNARY},
+{input:"\\texttt", tag:"mstyle", atname:"mathvariant", atval:"monospace", ttype:UNARY},
+{input:"\\mathsf", tag:"mstyle", atname:"mathvariant", atval:"sans-serif", ttype:UNARY},
+{input:"\\mathbb", tag:"mstyle", atname:"mathvariant", atval:"double-struck", ttype:UNARY, codes:LMbbb},
+{input:"\\mathcal",tag:"mstyle", atname:"mathvariant", atval:"script", ttype:UNARY, codes:LMcal},
+{input:"\\mathfrak",tag:"mstyle",atname:"mathvariant", atval:"fraktur",ttype:UNARY, codes:LMfrk}
+];
+
+function compareNames(s1,s2) {
+  if (s1.input > s2.input) return 1
+  else return -1;
+}
+
+var LMnames = []; //list of input symbols
+
+function LMinitSymbols() {
+  LMsymbols.sort(compareNames);
+  for (i=0; i<LMsymbols.length; i++) LMnames[i] = LMsymbols[i].input;
+}
+
+var LMmathml = "http://www.w3.org/1998/Math/MathML";
+
+function LMcreateElementMathML(t) {
+  if (isIE) return document.createElement("m:"+t);
+  else return document.createElementNS(LMmathml,t);
+}
+
+function LMcreateMmlNode(t,frag) {
+//  var node = LMcreateElementMathML(name);
+  if (isIE) var node = document.createElement("m:"+t);
+  else var node = document.createElementNS(LMmathml,t);
+  node.appendChild(frag);
+  return node;
+}
+
+function newcommand(oldstr,newstr) {
+  LMsymbols = LMsymbols.concat([{input:oldstr, tag:"mo", output:newstr,
+                                 ttype:DEFINITION}]);
+}
+
+function LMremoveCharsAndBlanks(str,n) {
+//remove n characters and any following blanks
+  var st;
+  st = str.slice(n);
+  for (var i=0; i<st.length && st.charCodeAt(i)<=32; i=i+1);
+  return st.slice(i);
+}
+
+function LMposition(arr, str, n) {
+// return position >=n where str appears or would be inserted
+// assumes arr is sorted
+  if (n==0) {
+    var h,m;
+    n = -1;
+    h = arr.length;
+    while (n+1<h) {
+      m = (n+h) >> 1;
+      if (arr[m]<str) n = m; else h = m;
+    }
+    return h;
+  } else
+    for (var i=n; i<arr.length && arr[i]<str; i++);
+  return i; // i=arr.length || arr[i]>=str
+}
+
+function LMgetSymbol(str) {
+//return maximal initial substring of str that appears in names
+//return null if there is none
+  var k = 0; //new pos
+  var j = 0; //old pos
+  var mk; //match pos
+  var st;
+  var tagst;
+  var match = "";
+  var more = true;
+  for (var i=1; i<=str.length && more; i++) {
+    st = str.slice(0,i); //initial substring of length i
+    j = k;
+    k = LMposition(LMnames, st, j);
+    if (k<LMnames.length && str.slice(0,LMnames[k].length)==LMnames[k]){
+      match = LMnames[k];
+      mk = k;
+      i = match.length;
+    }
+    more = k<LMnames.length && str.slice(0,LMnames[k].length)>=LMnames[k];
+  }
+  LMpreviousSymbol=LMcurrentSymbol;
+  if (match!=""){
+    LMcurrentSymbol=LMsymbols[mk].ttype;
+    return LMsymbols[mk];
+  }
+  LMcurrentSymbol=CONST;
+  k = 1;
+  st = str.slice(0,1); //take 1 character
+  if ("0"<=st && st<="9") tagst = "mn";
+  else tagst = (("A">st || st>"Z") && ("a">st || st>"z")?"mo":"mi");
+/*
+// Commented out by DRW (not fully understood, but probably to do with
+// use of "/" as an INFIX version of "\\frac", which we don't want):
+//}
+//if (st=="-" && LMpreviousSymbol==INFIX) {
+//  LMcurrentSymbol = INFIX;  //trick "/" into recognizing "-" on second parse
+//  return {input:st, tag:tagst, output:st, ttype:UNARY, func:true};
+//}
+*/
+  return {input:st, tag:tagst, output:st, ttype:CONST};
+}
+
+
+/*Parsing ASCII math expressions with the following grammar
+v ::= [A-Za-z] | greek letters | numbers | other constant symbols
+u ::= sqrt | text | bb | other unary symbols for font commands
+b ::= frac | root | stackrel	binary symbols
+l ::= { | \left			left brackets
+r ::= } | \right		right brackets
+S ::= v | lEr | uS | bSS	Simple expression
+I ::= S_S | S^S | S_S^S | S	Intermediate expression
+E ::= IE | I/I			Expression
+Each terminal symbol is translated into a corresponding mathml node.*/
+
+var LMpreviousSymbol,LMcurrentSymbol;
+
+function LMparseSexpr(str) { //parses str and returns [node,tailstr,(node)tag]
+  var symbol, node, result, result2, i, st,// rightvert = false,
+    newFrag = document.createDocumentFragment();
+  str = LMremoveCharsAndBlanks(str,0);
+  symbol = LMgetSymbol(str);             //either a token or a bracket or empty
+  if (symbol == null || symbol.ttype == RIGHTBRACKET)
+    return [null,str,null];
+  if (symbol.ttype == DEFINITION) {
+    str = symbol.output+LMremoveCharsAndBlanks(str,symbol.input.length);
+    symbol = LMgetSymbol(str);
+    if (symbol == null || symbol.ttype == RIGHTBRACKET)
+      return [null,str,null];
+  }
+  str = LMremoveCharsAndBlanks(str,symbol.input.length);
+  switch (symbol.ttype) {
+  case SPACE:
+    node = LMcreateElementMathML(symbol.tag);
+    node.setAttribute(symbol.atname,symbol.atval);
+    return [node,str,symbol.tag];
+  case UNDEROVER:
+    if (isIE) {
+      if (symbol.input.substr(0,4) == "\\big") {   // botch for missing symbols
+	str = "\\"+symbol.input.substr(4)+str;	   // make \bigcup = \cup etc.
+	symbol = LMgetSymbol(str);
+	symbol.ttype = UNDEROVER;
+	str = LMremoveCharsAndBlanks(str,symbol.input.length);
+      }
+    }
+    return [LMcreateMmlNode(symbol.tag,
+			document.createTextNode(symbol.output)),str,symbol.tag];
+  case CONST:
+    var output = symbol.output;
+    if (isIE) {
+      if (symbol.input == "'")
+	output = "\u2032";
+      else if (symbol.input == "''")
+	output = "\u2033";
+      else if (symbol.input == "'''")
+	output = "\u2033\u2032";
+      else if (symbol.input == "''''")
+	output = "\u2033\u2033";
+      else if (symbol.input == "\\square")
+	output = "\u25A1";	// same as \Box
+      else if (symbol.input.substr(0,5) == "\\frac") {
+						// botch for missing fractions
+	var denom = symbol.input.substr(6,1);
+	if (denom == "5" || denom == "6") {
+	  str = symbol.input.replace(/\\frac/,"\\frac ")+str;
+	  return [node,str,symbol.tag];
+	}
+      }
+    }
+    node = LMcreateMmlNode(symbol.tag,document.createTextNode(output));
+    return [node,str,symbol.tag];
+  case LONG:  // added by DRW
+    node = LMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output));
+    node.setAttribute("minsize","1.5");
+    node.setAttribute("maxsize","1.5");
+    node = LMcreateMmlNode("mover",node);
+    node.appendChild(LMcreateElementMathML("mspace"));
+    return [node,str,symbol.tag];
+  case STRETCHY:  // added by DRW
+    if (isIE && symbol.input == "\\backslash")
+	symbol.output = "\\";	// doesn't expand, but then nor does "\u2216"
+    node = LMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output));
+    if (symbol.input == "|" || symbol.input == "\\vert" ||
+	symbol.input == "\\|" || symbol.input == "\\Vert") {
+	  node.setAttribute("lspace","0em");
+	  node.setAttribute("rspace","0em");
+    }
+    node.setAttribute("maxsize",symbol.atval);  // don't allow to stretch here
+    if (symbol.rtag != null)
+      return [node,str,symbol.rtag];
+    else
+      return [node,str,symbol.tag];
+  case BIG:  // added by DRW
+    var atval = symbol.atval;
+    if (isIE)
+      atval = symbol.ieval;
+    symbol = LMgetSymbol(str);
+    if (symbol == null)
+	return [null,str,null];
+    str = LMremoveCharsAndBlanks(str,symbol.input.length);
+    node = LMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output));
+    if (isIE) {		// to get brackets to expand
+      var space = LMcreateElementMathML("mspace");
+      space.setAttribute("height",atval+"ex");
+      node = LMcreateMmlNode("mrow",node);
+      node.appendChild(space);
+    } else {		// ignored in IE
+      node.setAttribute("minsize",atval);
+      node.setAttribute("maxsize",atval);
+    }
+    return [node,str,symbol.tag];
+  case LEFTBRACKET:   //read (expr+)
+    if (symbol.input == "\\left") { // left what?
+      symbol = LMgetSymbol(str);
+      if (symbol != null) {
+	if (symbol.input == ".")
+	  symbol.invisible = true;
+	str = LMremoveCharsAndBlanks(str,symbol.input.length);
+      }
+    }
+    result = LMparseExpr(str,true,false);
+    if (symbol==null ||
+	(typeof symbol.invisible == "boolean" && symbol.invisible))
+      node = LMcreateMmlNode("mrow",result[0]);
+    else {
+      node = LMcreateMmlNode("mo",document.createTextNode(symbol.output));
+      node = LMcreateMmlNode("mrow",node);
+      node.appendChild(result[0]);
+    }
+    return [node,result[1],result[2]];
+  case MATRIX:	 //read (expr+)
+    if (symbol.input == "\\begin{array}") {
+      var mask = "";
+      symbol = LMgetSymbol(str);
+      str = LMremoveCharsAndBlanks(str,0);
+      if (symbol == null)
+	mask = "l";
+      else {
+	str = LMremoveCharsAndBlanks(str,symbol.input.length);
+	if (symbol.input != "{")
+	  mask = "l";
+	else do {
+	  symbol = LMgetSymbol(str);
+	  if (symbol != null) {
+	    str = LMremoveCharsAndBlanks(str,symbol.input.length);
+	    if (symbol.input != "}")
+	      mask = mask+symbol.input;
+	  }
+	} while (symbol != null && symbol.input != "" && symbol.input != "}");
+      }
+      result = LMparseExpr("{"+str,true,true);
+//    if (result[0]==null) return [LMcreateMmlNode("mo",
+//			   document.createTextNode(symbol.input)),str];
+      node = LMcreateMmlNode("mtable",result[0]);
+      mask = mask.replace(/l/g,"left ");
+      mask = mask.replace(/r/g,"right ");
+      mask = mask.replace(/c/g,"center ");
+      node.setAttribute("columnalign",mask);
+      node.setAttribute("displaystyle","false");
+      if (isIE)
+	return [node,result[1],null];
+// trying to get a *little* bit of space around the array
+// (IE already includes it)
+      var lspace = LMcreateElementMathML("mspace");
+      lspace.setAttribute("width","0.167em");
+      var rspace = LMcreateElementMathML("mspace");
+      rspace.setAttribute("width","0.167em");
+      var node1 = LMcreateMmlNode("mrow",lspace);
+      node1.appendChild(node);
+      node1.appendChild(rspace);
+      return [node1,result[1],null];
+    } else {	// eqnarray
+      result = LMparseExpr("{"+str,true,true);
+      node = LMcreateMmlNode("mtable",result[0]);
+      if (isIE)
+	node.setAttribute("columnspacing","0.25em"); // best in practice?
+      else
+	node.setAttribute("columnspacing","0.167em"); // correct (but ignored?)
+      node.setAttribute("columnalign","right center left");
+      node.setAttribute("displaystyle","true");
+      node = LMcreateMmlNode("mrow",node);
+      return [node,result[1],null];
+    }
+  case TEXT:
+      if (str.charAt(0)=="{") i=str.indexOf("}");
+      else i = 0;
+      if (i==-1)
+		 i = str.length;
+      st = str.slice(1,i);
+      if (st.charAt(0) == " ") {
+	node = LMcreateElementMathML("mspace");
+	node.setAttribute("width","0.33em");	// was 1ex
+	newFrag.appendChild(node);
+      }
+      newFrag.appendChild(
+        LMcreateMmlNode(symbol.tag,document.createTextNode(st)));
+      if (st.charAt(st.length-1) == " ") {
+	node = LMcreateElementMathML("mspace");
+	node.setAttribute("width","0.33em");	// was 1ex
+	newFrag.appendChild(node);
+      }
+      str = LMremoveCharsAndBlanks(str,i+1);
+      return [LMcreateMmlNode("mrow",newFrag),str,null];
+  case UNARY:
+      result = LMparseSexpr(str);
+      if (result[0]==null) return [LMcreateMmlNode(symbol.tag,
+                             document.createTextNode(symbol.output)),str];
+      if (typeof symbol.func == "boolean" && symbol.func) { // functions hack
+	st = str.charAt(0);
+//	if (st=="^" || st=="_" || st=="/" || st=="|" || st==",") {
+	if (st=="^" || st=="_" || st==",") {
+	  return [LMcreateMmlNode(symbol.tag,
+		    document.createTextNode(symbol.output)),str,symbol.tag];
+        } else {
+	  node = LMcreateMmlNode("mrow",
+	   LMcreateMmlNode(symbol.tag,document.createTextNode(symbol.output)));
+	  if (isIE) {
+	    var space = LMcreateElementMathML("mspace");
+	    space.setAttribute("width","0.167em");
+	    node.appendChild(space);
+	  }
+	  node.appendChild(result[0]);
+	  return [node,result[1],symbol.tag];
+        }
+      }
+      if (symbol.input == "\\sqrt") {		// sqrt
+	if (isIE) {	// set minsize, for \surd
+	  var space = LMcreateElementMathML("mspace");
+	  space.setAttribute("height","1.2ex");
+	  space.setAttribute("width","0em");	// probably no effect
+	  node = LMcreateMmlNode(symbol.tag,result[0])
+//	  node.setAttribute("minsize","1");	// ignored
+//	  node = LMcreateMmlNode("mrow",node);  // hopefully unnecessary
+	  node.appendChild(space);
+	  return [node,result[1],symbol.tag];
+	} else
+	  return [LMcreateMmlNode(symbol.tag,result[0]),result[1],symbol.tag];
+      } else if (typeof symbol.acc == "boolean" && symbol.acc) {   // accent
+        node = LMcreateMmlNode(symbol.tag,result[0]);
+	var output = symbol.output;
+	if (isIE) {
+		if (symbol.input == "\\hat")
+			output = "\u0302";
+		else if (symbol.input == "\\widehat")
+			output = "\u005E";
+		else if (symbol.input == "\\bar")
+			output = "\u00AF";
+		else if (symbol.input == "\\grave")
+			output = "\u0300";
+		else if (symbol.input == "\\tilde")
+			output = "\u0303";
+	}
+	var node1 = LMcreateMmlNode("mo",document.createTextNode(output));
+	if (symbol.input == "\\vec" || symbol.input == "\\check")
+						// don't allow to stretch
+	    node1.setAttribute("maxsize","1.2");
+		 // why doesn't "1" work?  \vec nearly disappears in firefox
+	if (isIE && symbol.input == "\\bar")
+	    node1.setAttribute("maxsize","0.5");
+	if (symbol.input == "\\underbrace" || symbol.input == "\\underline")
+	  node1.setAttribute("accentunder","true");
+	else
+	  node1.setAttribute("accent","true");
+	node.appendChild(node1);
+	if (symbol.input == "\\overbrace" || symbol.input == "\\underbrace")
+	  node.ttype = UNDEROVER;
+	return [node,result[1],symbol.tag];
+      } else {			      // font change or displaystyle command
+        if (!isIE && typeof symbol.codes != "undefined") {
+          for (i=0; i<result[0].childNodes.length; i++)
+            if (result[0].childNodes[i].nodeName=="mi" || result[0].nodeName=="mi") {
+              st = (result[0].nodeName=="mi"?result[0].firstChild.nodeValue:
+                              result[0].childNodes[i].firstChild.nodeValue);
+              var newst = [];
+              for (var j=0; j<st.length; j++)
+                if (st.charCodeAt(j)>64 && st.charCodeAt(j)<91) newst = newst +
+                  String.fromCharCode(symbol.codes[st.charCodeAt(j)-65]);
+                else newst = newst + st.charAt(j);
+              if (result[0].nodeName=="mi")
+                result[0]=LMcreateElementMathML("mo").
+                          appendChild(document.createTextNode(newst));
+              else result[0].replaceChild(LMcreateElementMathML("mo").
+          appendChild(document.createTextNode(newst)),result[0].childNodes[i]);
+            }
+        }
+        node = LMcreateMmlNode(symbol.tag,result[0]);
+        node.setAttribute(symbol.atname,symbol.atval);
+	if (symbol.input == "\\scriptstyle" ||
+	    symbol.input == "\\scriptscriptstyle")
+		node.setAttribute("displaystyle","false");
+	return [node,result[1],symbol.tag];
+      }
+  case BINARY:
+    result = LMparseSexpr(str);
+    if (result[0]==null) return [LMcreateMmlNode("mo",
+			   document.createTextNode(symbol.input)),str,null];
+    result2 = LMparseSexpr(result[1]);
+    if (result2[0]==null) return [LMcreateMmlNode("mo",
+			   document.createTextNode(symbol.input)),str,null];
+    if (symbol.input=="\\root" || symbol.input=="\\stackrel")
+      newFrag.appendChild(result2[0]);
+    newFrag.appendChild(result[0]);
+    if (symbol.input=="\\frac") newFrag.appendChild(result2[0]);
+    return [LMcreateMmlNode(symbol.tag,newFrag),result2[1],symbol.tag];
+  case INFIX:
+    str = LMremoveCharsAndBlanks(str,symbol.input.length);
+    return [LMcreateMmlNode("mo",document.createTextNode(symbol.output)),
+	str,symbol.tag];
+  default:
+    return [LMcreateMmlNode(symbol.tag,        //its a constant
+	document.createTextNode(symbol.output)),str,symbol.tag];
+  }
+}
+
+function LMparseIexpr(str) {
+  var symbol, sym1, sym2, node, result, tag, underover;
+  str = LMremoveCharsAndBlanks(str,0);
+  sym1 = LMgetSymbol(str);
+  result = LMparseSexpr(str);
+  node = result[0];
+  str = result[1];
+  tag = result[2];
+  symbol = LMgetSymbol(str);
+  if (symbol.ttype == INFIX) {
+    str = LMremoveCharsAndBlanks(str,symbol.input.length);
+    result = LMparseSexpr(str);
+    if (result[0] == null) // show box in place of missing argument
+      result[0] = LMcreateMmlNode("mo",document.createTextNode("\u25A1"));
+    str = result[1];
+    tag = result[2];
+    if (symbol.input == "_" || symbol.input == "^") {
+      sym2 = LMgetSymbol(str);
+      tag = null;	// no space between x^2 and a following sin, cos, etc.
+// This is for \underbrace and \overbrace
+      underover = ((sym1.ttype == UNDEROVER) || (node.ttype == UNDEROVER));
+//    underover = (sym1.ttype == UNDEROVER);
+      if (symbol.input == "_" && sym2.input == "^") {
+        str = LMremoveCharsAndBlanks(str,sym2.input.length);
+        var res2 = LMparseSexpr(str);
+	str = res2[1];
+	tag = res2[2];  // leave space between x_1^2 and a following sin etc.
+        node = LMcreateMmlNode((underover?"munderover":"msubsup"),node);
+        node.appendChild(result[0]);
+        node.appendChild(res2[0]);
+      } else if (symbol.input == "_") {
+	node = LMcreateMmlNode((underover?"munder":"msub"),node);
+        node.appendChild(result[0]);
+      } else {
+	node = LMcreateMmlNode((underover?"mover":"msup"),node);
+        node.appendChild(result[0]);
+      }
+      node = LMcreateMmlNode("mrow",node); // so sum does not stretch
+    } else {
+      node = LMcreateMmlNode(symbol.tag,node);
+      if (symbol.input == "\\atop" || symbol.input == "\\choose")
+	node.setAttribute("linethickness","0ex");
+      node.appendChild(result[0]);
+      if (symbol.input == "\\choose")
+	node = LMcreateMmlNode("mfenced",node);
+    }
+  }
+  return [node,str,tag];
+}
+
+function LMparseExpr(str,rightbracket,matrix) {
+  var symbol, node, result, i, tag,
+  newFrag = document.createDocumentFragment();
+  do {
+    str = LMremoveCharsAndBlanks(str,0);
+    result = LMparseIexpr(str);
+    node = result[0];
+    str = result[1];
+    tag = result[2];
+    symbol = LMgetSymbol(str);
+    if (node!=undefined) {
+      if ((tag == "mn" || tag == "mi") && symbol!=null &&
+	typeof symbol.func == "boolean" && symbol.func) {
+			// Add space before \sin in 2\sin x or x\sin x
+	  var space = LMcreateElementMathML("mspace");
+	  space.setAttribute("width","0.167em");
+	  node = LMcreateMmlNode("mrow",node);
+	  node.appendChild(space);
+      }
+      newFrag.appendChild(node);
+    }
+  } while ((symbol.ttype != RIGHTBRACKET)
+        && symbol!=null && symbol.output!="");
+  tag = null;
+  if (symbol.ttype == RIGHTBRACKET) {
+    if (symbol.input == "\\right") { // right what?
+      str = LMremoveCharsAndBlanks(str,symbol.input.length);
+      symbol = LMgetSymbol(str);
+      if (symbol != null && symbol.input == ".")
+	symbol.invisible = true;
+      if (symbol != null)
+	tag = symbol.rtag;
+    }
+    if (symbol!=null)
+      str = LMremoveCharsAndBlanks(str,symbol.input.length); // ready to return
+    var len = newFrag.childNodes.length;
+    if (matrix &&
+      len>0 && newFrag.childNodes[len-1].nodeName == "mrow" && len>1 &&
+      newFrag.childNodes[len-2].nodeName == "mo" &&
+      newFrag.childNodes[len-2].firstChild.nodeValue == "&") { //matrix
+	var pos = []; // positions of ampersands
+        var m = newFrag.childNodes.length;
+        for (i=0; matrix && i<m; i=i+2) {
+          pos[i] = [];
+          node = newFrag.childNodes[i];
+	  for (var j=0; j<node.childNodes.length; j++)
+	    if (node.childNodes[j].firstChild.nodeValue=="&")
+	      pos[i][pos[i].length]=j;
+        }
+	var row, frag, n, k, table = document.createDocumentFragment();
+	for (i=0; i<m; i=i+2) {
+	  row = document.createDocumentFragment();
+	  frag = document.createDocumentFragment();
+	  node = newFrag.firstChild; // <mrow> -&-&...&-&- </mrow>
+	  n = node.childNodes.length;
+	  k = 0;
+	  for (j=0; j<n; j++) {
+	    if (typeof pos[i][k] != "undefined" && j==pos[i][k]){
+	      node.removeChild(node.firstChild); //remove &
+	      row.appendChild(LMcreateMmlNode("mtd",frag));
+	      k++;
+	    } else frag.appendChild(node.firstChild);
+	  }
+	  row.appendChild(LMcreateMmlNode("mtd",frag));
+	  if (newFrag.childNodes.length>2) {
+	    newFrag.removeChild(newFrag.firstChild); //remove <mrow> </mrow>
+	    newFrag.removeChild(newFrag.firstChild); //remove <mo>&</mo>
+	  }
+	  table.appendChild(LMcreateMmlNode("mtr",row));
+	}
+	return [table,str];
+    }
+    if (typeof symbol.invisible != "boolean" || !symbol.invisible) {
+      node = LMcreateMmlNode("mo",document.createTextNode(symbol.output));
+      newFrag.appendChild(node);
+    }
+  }
+  return [newFrag,str,tag];
+}
+
+function LMparseMath(str) {
+  var result, node = LMcreateElementMathML("mstyle");
+  if (LMmathcolor != "") node.setAttribute("mathcolor",LMmathcolor);
+  if (LMmathfontfamily != "") node.setAttribute("fontfamily",LMmathfontfamily);
+  node.appendChild(LMparseExpr(str.replace(/^\s+/g,""),false,false)[0]);
+  node = LMcreateMmlNode("math",node);
+  if (LMshowasciiformulaonhover)                    //fixed by djhsu so newline
+    node.setAttribute("title",str.replace(/\s+/g," "));//does not show in Gecko
+  var fnode = LMcreateElementXHTML("span");
+  fnode.style.fontSize = mathfontsize;
+  if (LMmathfontfamily != "") fnode.style.fontFamily = LMmathfontfamily;
+  fnode.appendChild(node);
+  return fnode;
+}
+
+function LMstrarr2docFrag(arr, linebreaks) {
+  var newFrag=document.createDocumentFragment();
+  var expr = false;
+  for (var i=0; i<arr.length; i++) {
+    if (expr) newFrag.appendChild(LMparseMath(arr[i]));
+    else {
+      var arri = (linebreaks ? arr[i].split("\n\n") : [arr[i]]);
+      newFrag.appendChild(LMcreateElementXHTML("span").
+      appendChild(document.createTextNode(arri[0])));
+      for (var j=1; j<arri.length; j++) {
+        newFrag.appendChild(LMcreateElementXHTML("p"));
+        newFrag.appendChild(LMcreateElementXHTML("span").
+        appendChild(document.createTextNode(arri[j])));
+      }
+    }
+    expr = !expr;
+  }
+  return newFrag;
+}
+
+function LMprocessNodeR(n, linebreaks) {
+  var mtch, str, arr, frg, i;
+  if (n.childNodes.length == 0) {
+   if ((n.nodeType!=8 || linebreaks) &&
+    n.parentNode.nodeName!="form" && n.parentNode.nodeName!="FORM" &&
+    n.parentNode.nodeName!="textarea" && n.parentNode.nodeName!="TEXTAREA" &&
+    n.parentNode.nodeName!="pre" && n.parentNode.nodeName!="PRE") {
+    str = n.nodeValue;
+    if (!(str == null)) {
+      str = str.replace(/\r\n\r\n/g,"\n\n");
+      str = str.replace(/\x20+/g," ");
+      str = str.replace(/\s*\r\n/g," ");
+// DELIMITERS:
+      mtch = (str.indexOf("\$")==-1 ? false : true);
+      str = str.replace(/([^\\])\$/g,"$1 \$");
+      str = str.replace(/^\$/," \$");	// in case \$ at start of string
+      arr = str.split(" \$");
+      for (i=0; i<arr.length; i++)
+	arr[i]=arr[i].replace(/\\\$/g,"\$");
+      if (arr.length>1 || mtch) {
+        if (LMcheckForMathML) {
+          LMcheckForMathML = false;
+          var nd = LMisMathMLavailable();
+          LMnoMathML = nd != null;
+          if (LMnoMathML && LMnotifyIfNoMathML)
+            if (LMalertIfNoMathML)
+              alert("To view the ASCIIMathML notation use Internet Explorer 6 +\nMathPlayer (free from www.dessci.com)\n\
+                or Firefox/Mozilla/Netscape");
+            else LMbody.insertBefore(nd,LMbody.childNodes[0]);
+        }
+        if (!LMnoMathML) {
+          frg = LMstrarr2docFrag(arr,n.nodeType==8);
+          var len = frg.childNodes.length;
+          n.parentNode.replaceChild(frg,n);
+          return len-1;
+        } else return 0;
+      }
+    }
+   } else return 0;
+  } else if (n.nodeName!="math") {
+    for (i=0; i<n.childNodes.length; i++)
+      i += LMprocessNodeR(n.childNodes[i], linebreaks);
+  }
+  return 0;
+}
+
+var tcnt = 0, dcnt = 0; //theorem and definition counters
+
+function simpleLaTeXformatting(st) {
+  st = st.replace(/\$\$(.*?)\$\$/g,"<p align=\"center\">$\\displaystyle{$1}$</p>");
+  st = st.replace(/\\begin{(theorem|lemma|proposition|corollary)}((.|\n)*?)\\end{\1}/g,function(r,s,t){tcnt++; return "<b>"+s.charAt(0).toUpperCase()+s.slice(1)+" "+tcnt+".</b> <i>"+t.replace(/^\s*<\/?\w+\/?>|\s*<\/?\w+\/?>$/g,"")+"</i>"});
+  st = st.replace(/\\begin{(definition|example|remark|problem|exercise|conjecture|solution)}((.|\n)*?)\\end{\1}/g,function(r,s,t){dcnt++; return "<b>"+s.charAt(0).toUpperCase()+s.slice(1)+" "+dcnt+".</b> "+t.replace(/^\s*<\/?\w+\/?>|\s*<\/?\w+\/?>$/g,"")});
+  st = st.replace(/\\begin{proof}((.|\n)*?)\\end{proof}/g,function(s,t){return "<i>Proof:</i> "+t.replace(/^\s*<\/?\w+\/?>|\s*<\/?\w+\/?>$/g,"")+" &#x25A1;"});
+  st = st.replace(/\\emph{(.*?)}/g,"<em>$1</em>");
+  st = st.replace(/\\textbf{(.*?)}/g,"<b>$1</b>");
+  st = st.replace(/\\cite{(.*?)}/g,"[$1]");
+  st = st.replace(/\\chapter{(.*?)}/g,"<h2>$1</h2>");
+  st = st.replace(/\\section{(.*?)}(\s*<\/?(br|p)\s?\/?>)?/g,"<h3>$1</h3>");
+  st = st.replace(/\\subsection{(.*?)}/g,"<h4>$1</h4>");
+  st = st.replace(/\\begin{itemize}(\s*<\/?(br|p)\s?\/?>)?/g,"<ul>");
+  st = st.replace(/\\item\s((.|\n)*?)(?=(\\item|\\end))/g,"<li>$1</li>");
+  st = st.replace(/\\end{itemize}(\s*<\/?(br|p)\s?\/?>)?/g,"</ul>");
+  st = st.replace(/\\begin{enumerate}(\s*<\/?(br|p)\s?\/?>)?/g,"<ol>");
+  st = st.replace(/\\end{enumerate}(\s*<\/?(br|p)\s?\/?>)?/g,"</ol>");
+  st = st.replace(/\\item\[(.*?)]{(.*?)}/g,"<dt>$1</dt><dd>$2</dd>");
+  st = st.replace(/\\begin{description}/g,"<dl>");
+  st = st.replace(/\\end{description}/g,"</dl>");
+  st = st.replace(/\\newline\b/g,"<br/>");
+  st = st.replace(/\\newpage\b/g,"<br style=\"page-break-after:always;\">");
+  st = st.replace(/\\par\b/g,"<p>&nbsp;</p>");
+  st = st.replace(/\\bigskip/g,"<p style=\"margin-bottom:0.5in\">&nbsp;</p>");
+  st = st.replace(/\\medskip/g,"<p style=\"margin-bottom:0.3in\">&nbsp;</p>");
+  st = st.replace(/\\smallskip/g,"<p style=\"margin-bottom:0.15in\">&nbsp;</p>");
+  st = st.replace(/\\begin{center}(.*?)\\end{center}/g,"<p align=\"center\">$1</p>");
+  st = st.replace(/<embed\s+class\s?=\s?"ASCIIsvg"/g,"<embed class=\"ASCIIsvg\" src=\""+dsvglocation+"d.svg\" wmode=\"transparent\"");
+  st = st.replace(/(?:\\begin{a?graph}|agraph|\(:graph\s)((.|\n)*?)(?:\\end{a?graph}|enda?graph|:\))/g,function(s,t){return "<div><embed class=\"ASCIIsvg\" src=\""+dsvglocation+"d.svg\" wmode=\"transparent\" script=\'"+t.replace(/<\/?(br|p|pre)\s?\/?>/gi,"\n")+"\'/></div>"});
+//  st = st.replace(/\(:graph((.|\n)*?):\)/g,function(s,t){return "<div><embed class=\"ASCIIsvg\" src=\""+dsvglocation+"d.svg\" wmode=\"transparent\" script=\'"+t.replace(/<\/?(br|p|pre)\s?\/?>/gi,"\n")+"\'/></div>"});
+  st = st.replace(/insertASCIIMathCalculator/g,"<div class=\"ASCIIMathCalculator\"></div>");
+  return st
+}
+
+function LMprocessNode(n, linebreaks, spanclassLM) {
+  var frag,st;
+  if (spanclassLM!=null) {
+    frag = document.getElementsByTagName("span")
+    for (var i=0;i<frag.length;i++)
+      if (frag[i].className == "LM")
+        LMprocessNodeR(frag[i],linebreaks);
+  } else {
+    try {
+      st = n.innerHTML;
+    } catch(err) {}
+    var am = /amath|agraph/i.test(st);
+    if ((st==null || st.indexOf("\$ ")!=-1 || st.indexOf("\$<")!=-1 || 
+         st.indexOf("\\begin")!=-1 || am || st.slice(-1)=="$" ||
+         st.indexOf("\$\n")!=-1)&& !/edit-content|HTMLArea|wikiedit/.test(st)){
+      if (!avoidinnerHTML && translateLaTeXformatting) 
+        st = simpleLaTeXformatting(st);
+      if (st!=null && am && !avoidinnerHTML) {
+//alert(st)
+        st = st.replace(/<sup>(.*?)<\/sup>(\s|(\S))/gi,"^{$1} $3");
+//        st = st.replace(/<\/?font.*?>/gi,""); // do this only in amath...end
+        st = st.replace(/(Proof:)/g,"<i>$1</i>");
+        st = st.replace(/QED/g,"&#x25A1;");
+        st = st.replace(/(\\?end{?a?math}?)/ig,"<span></span>$1");
+        st = st.replace(/(\bamath|\\begin{a?math})/ig,"<span></span>$1");
+        st = st.replace(/([>\n])(Theorem|Lemma|Proposition|Corollary|Definition|Example|Remark|Problem|Exercise|Conjecture|Solution)(:|\W\W?(\w|\.)*?\W?:)/g,"$1<b>$2$3</b>");
+      }
+      st = st.replace(/%7E/g,"~");
+      if (!avoidinnerHTML) n.innerHTML = st;
+      LMprocessNodeR(n,linebreaks);
+    }
+  }
+  if (isIE) { //needed to match size and font of formula to surrounding text
+    frag = document.getElementsByTagName('math');
+    for (var i=0;i<frag.length;i++) frag[i].update()
+  }
+}
+
+var LMbody;
+var LMnoMathML = false, LMtranslated = false;
+
+function LMtranslate(spanclassLM) {
+  if (!LMtranslated) { // run this only once
+    LMtranslated = true;
+    LMinitSymbols();
+    LMbody = document.getElementsByTagName("body")[0];
+    var processN = document.getElementById(AMdocumentId);
+//alert(processN)
+    LMprocessNode((processN!=null?processN:LMbody), false, spanclassLM);
+  }
+}
+
+if (isIE) { // avoid adding MathPlayer info explicitly to each webpage
+  document.write("<object id=\"mathplayer\"\
+  classid=\"clsid:32F66A20-7614-11D4-BD11-00104BD3F987\"></object>");
+  document.write("<?import namespace=\"m\" implementation=\"#mathplayer\"?>");
+}
+
+/* ASCIIsvg.js
+==============
+JavaScript routines to dynamically generate Scalable Vector Graphics
+using a mathematical xy-coordinate system (y increases upwards) and
+very intuitive JavaScript commands (no programming experience required).
+ASCIIsvg.js is good for learning math and illustrating online math texts.
+Works with Internet Explorer+Adobe SVGviewer and SVG enabled Mozilla/Firefox.
+
+Ver 1.2.9 July 31, 2007 (c) Peter Jipsen http://www.chapman.edu/~jipsen
+Latest version at http://math.chapman.edu/~jipsen/math/pub/ASCIIsvg.js
+If you use it on a webpage, please send the URL to jipsen@chapman.edu
+
+This program is free software; you can redistribute it and/or modify
+it under the terms of the GNU Lesser General Public License as published by
+the Free Software Foundation; either version 2.1 of the License, or (at
+your option) any later version.
+
+This program is distributed in the hope that it will be useful, 
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser
+General Public License (at http://www.gnu.org/license/lgpl.html) 
+for more details.*/
+
+// you can change these
+var checkIfSVGavailable = true;
+var notifyIfNoSVG = true;
+var alertIfNoSVG = false;
+
+// global defaults used if not specified by graph (you can change these)
+var defaultwidth = 300; defaultheight = 200;   // in pixels
+var defaultxmin = -5.5; defaultxmax = 5.5;     // in usercoords
+var defaultborder = 0; border = defaultborder; // in pixel
+var defaultstrokewidth = "1"; // default line width in pixel
+var defaultstroke = "blue";   // default line color
+var defaultstrokeopacity = 1; // transparent = 0, solid =1
+var defaultstrokedasharray = null; // "10,10" gives 10px long dashes
+var defaultfill = "none";        // default fill color
+var defaultfillopacity = 1;      // transparent = 0, solid =1
+var defaultfontstyle = "normal"; // default text shape normal|italic|inherit
+var defaultfontfamily = "times"; // default font times|ariel|helvetica|...
+var defaultfontsize = "16";      // default size (scaled automatically)
+var defaultfontweight = "normal";// normal|bold|bolder|lighter|100|...|900
+var defaultfontstroke = "none";  // default font outline color
+var defaultfontfill = "none";    // default font color
+var defaultmarker = "none";      // "dot" | "arrow" | "+" | "-" | "|"
+var defaultendpoints = "";       // "c-d" where c is <|o|* and d is >|o|*
+
+// global values used for all pictures (you can change these)
+var showcoordinates = true;
+var markerstrokewidth = "1";
+var markerstroke = "black";
+var markerfill = "yellow";
+var markersize = 4;
+var arrowfill = stroke;
+var dotradius = 4;
+var ticklength = 4;
+var axesstroke = "black";
+var gridstroke = "grey";
+var backgroundstyle = "fill-opacity:0; fill:white";
+var singlelettersitalic = true;
+
+// internal variables (probably no need to change these)
+var picturepos = null; // position of picture relative to top of HTML page
+var xunitlength;       // in pixels, used to convert to user coordinates
+var yunitlength;       // in pixels
+var origin = [0,0];    // in pixels (default is bottom left corner)
+var above = "above";   // shorthands (to avoid typing quotes)
+var below = "below";
+var left = "left";
+var right = "right";
+var aboveleft = "aboveleft";
+var aboveright = "aboveright";
+var belowleft = "belowleft";
+var belowright = "belowright";
+var xmin, xmax, ymin, ymax, xscl, yscl, 
+    xgrid, ygrid, xtick, ytick, initialized;
+var strokewidth, strokedasharray, stroke, fill, strokeopacity, fillopacity;
+var fontstyle, fontfamily, fontsize, fontweight, fontstroke, fontfill;
+var marker, endpoints, dynamic = {};
+var picture, svgpicture, doc, width, height, a, b, c, d, i, n, p, t, x, y;
+var isIE = document.createElementNS==null;
+
+var cpi = "\u03C0", ctheta = "\u03B8";      // character for pi, theta
+var log = function(x) { return ln(x)/ln(10) };
+var pi = Math.PI, e = Math.E, ln = Math.log, sqrt = Math.sqrt;
+var floor = Math.floor, ceil = Math.ceil, abs = Math.abs;
+var sin = Math.sin, cos = Math.cos, tan = Math.tan;
+var arcsin = Math.asin, arccos = Math.acos, arctan = Math.atan;
+var sec = function(x) { return 1/Math.cos(x) };
+var csc = function(x) { return 1/Math.sin(x) };
+var cot = function(x) { return 1/Math.tan(x) };
+var arcsec = function(x) { return arccos(1/x) };
+var arccsc = function(x) { return arcsin(1/x) };
+var arccot = function(x) { return arctan(1/x) };
+var sinh = function(x) { return (Math.exp(x)-Math.exp(-x))/2 };
+var cosh = function(x) { return (Math.exp(x)+Math.exp(-x))/2 };
+var tanh = 
+  function(x) { return (Math.exp(x)-Math.exp(-x))/(Math.exp(x)+Math.exp(-x)) };
+var sech = function(x) { return 1/cosh(x) };
+var csch = function(x) { return 1/sinh(x) };
+var coth = function(x) { return 1/tanh(x) };
+var arcsinh = function(x) { return ln(x+Math.sqrt(x*x+1)) };
+var arccosh = function(x) { return ln(x+Math.sqrt(x*x-1)) };
+var arctanh = function(x) { return ln((1+x)/(1-x))/2 };
+var sech = function(x) { return 1/cosh(x) };
+var csch = function(x) { return 1/sinh(x) };
+var coth = function(x) { return 1/tanh(x) };
+var arcsech = function(x) { return arccosh(1/x) };
+var arccsch = function(x) { return arcsinh(1/x) };
+var arccoth = function(x) { return arctanh(1/x) };
+var sign = function(x) { return (x==0?0:(x<0?-1:1)) };
+
+function factorial(x,n) { // Factorial function
+  if (n==null) n=1;
+  if (Math.abs(x-Math.round(x*1000000)/1000000)<1e-15)
+    x = Math.round(x*1000000)/1000000;
+  if (x-Math.floor(x)!=0) return NaN;
+  for (var i=x-n; i>0; i-=n) x*=i;
+  return (x<0?NaN:(x==0?1:x));
+}
+
+function C(x,k) {  // Binomial coefficient function
+  var res=1;
+  for (var i=0; i<k; i++) res*=(x-i)/(k-i);
+  return res;
+}
+
+function chop(x,n) { // Truncate decimal number to n places after decimal point
+  if (n==null) n=0;
+  return Math.floor(x*Math.pow(10,n))/Math.pow(10,n);
+}
+
+function ran(a,b,n) { // Generate random number in [a,b] with n digits after .
+  if (n==null) n=0;
+  return chop((b+Math.pow(10,-n)-a)*Math.random()+a,n);
+}
+
+function myCreateElementXHTML(t) {
+  if (isIE) return document.createElement(t);
+  else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
+}
+
+function myCreateElementSVG(t) {
+  if (isIE) return doc.createElement(t);
+  else return doc.createElementNS("http://www.w3.org/2000/svg",t);
+}
+
+function getElementsByClass(container, tagName, clsName){
+  var list = new Array(0);
+  var collection = container.getElementsByTagName(tagName);
+  for(var i = 0; i < collection.length; i++)
+    if(collection[i].className.slice(0,clsName.length)==clsName)
+      list[list.length] = collection[i];
+  return list;
+}
+
+function findPos(obj) { // top-left corner of obj on HTML page in pixel
+  var curleft = curtop = 0;
+  if (obj.offsetParent) {
+    curleft = obj.offsetLeft
+    curtop = obj.offsetTop
+    while (obj = obj.offsetParent) {
+      curleft += obj.offsetLeft
+      curtop += obj.offsetTop
+    }
+  }
+  return [curleft,curtop];
+}
+
+function isSVGavailable() {
+  var nd = myCreateElementXHTML("center");
+  nd.appendChild(document.createTextNode("To view the "));
+  var an = myCreateElementXHTML("a");
+  an.appendChild(document.createTextNode("ASCIIsvg"));
+  an.setAttribute("href","http://www.chapman.edu/~jipsen/asciisvg.html");
+  nd.appendChild(an);
+  nd.appendChild(document.createTextNode(" images use Internet Explorer 6+"));
+  an = myCreateElementXHTML("a");
+  an.appendChild(document.createTextNode("Adobe SVGviewer 3.02"));
+  an.setAttribute("href","http://www.adobe.com/svg");
+  nd.appendChild(an);
+  nd.appendChild(document.createTextNode(" or "));
+  an = myCreateElementXHTML("a");
+  an.appendChild(document.createTextNode("SVG enabled Mozilla/Firefox"));
+  an.setAttribute("href",
+    "http://www.chapman.edu/~jipsen/svg/svgenabledmozillafirefox.html");
+  nd.appendChild(an);
+  if (navigator.appName.slice(0,8)=="Netscape") 
+    if (window['SVGElement']) return null;
+    else return nd;
+  else if (navigator.appName.slice(0,9)=="Microsoft")
+    try {
+      var oSVG=eval("new ActiveXObject('Adobe.SVGCtl.3');");
+        return null;
+    } catch (e) {
+        return nd;
+    }
+  else return nd;
+}
+
+function setText(st,id) { // add text to an existing node with given id
+  var node = document.getElementById(id);
+  if (node!=null)
+    if (node.childNodes.length!=0) node.childNodes[0].nodeValue = st;
+    else node.appendChild(document.createTextNode(st));
+}
+
+function getX(evt) { // return mouse x-coord in user coordinate system
+  var svgroot = evt.target.parentNode;
+  return (evt.clientX+(isIE?0:window.pageXOffset)-svgroot.getAttribute("left")-svgroot.getAttribute("ox"))/(svgroot.getAttribute("xunitlength")-0);
+}
+
+function getY(evt) { // return mouse y-coord in user coordinate system
+  var svgroot = evt.target.parentNode;
+  return (svgroot.getAttribute("height")-svgroot.getAttribute("oy")-(evt.clientY+(isIE?0:window.pageYOffset)-svgroot.getAttribute("top")))/(svgroot.getAttribute("yunitlength")-0);
+}
+
+function translateandeval(src) { //modify user input to JavaScript syntax
+  var errstr;
+  // replace plot(f(x),...) with plot("f(x)",...)  
+  src = src.replace(/plot\(\x20*([^\"f\[][^\n\r;]+?)\,/g,"plot\(\"$1\",");
+  src = src.replace(/plot\(\x20*([^\"f\[][^\n\r;]+)\)/g,"plot(\"$1\")");
+
+  // replace (expr,expr) by [expr,expr] where expr has no (,) in it
+  src = src.replace(/([=(,]\x20*)\(([-a-z0-9./+*]+?),([-a-z0-9./+*]+?)\)/g,"$1[$2,$3]");
+
+  // insert * between digit and letter e.g. 2x --> 2*x
+  src = src.replace(/([0-9])([a-zA-Z])/g,"$1*$2");
+  src = src.replace(/\)([\(0-9a-zA-Z])/g,"\)*$1");
+
+  try {
+    with (Math) eval(src);          // here the svgpicture object is created
+  } catch(err) {
+    if (err!="wait") {
+      if (typeof err=="object") 
+        errstr = err.name+" "+err.message+" "+err.number+" "+err.description;
+      else errstr = err;
+      alert(errstr+"\n"+src)
+    }
+  }
+}
+
+function drawPictures() { // main routine; called after webpage has loaded
+  var src, id, dsvg, nd, node, ht, index, cols, arr, i, node2;
+  var pictures = document.getElementsByTagName("textarea");
+  for (index = 0; index<pictures.length; index++)
+    if (pictures[index].className=="ASCIIsvg"){
+      pictures[index].style.display="none";  // hide the textarea
+    }
+  var ASbody = document.getElementsByTagName("body")[0];
+  pictures = getElementsByClass(ASbody,"embed","ASCIIsvg");
+  var len = pictures.length;
+  if (checkIfSVGavailable) {
+    nd = isSVGavailable();
+    if (nd != null && notifyIfNoSVG && len>0)
+      if (alertIfNoSVG)
+        alert("To view the SVG pictures in Internet Explorer\n\
+download the free Adobe SVGviewer from www.adobe.com/svg or\n\
+use Firefox 2.0 or later");
+      else {
+        ASbody.insertBefore(nd,ASbody.childNodes[0]);
+      }
+  }
+ if (nd == null) {
+  for (index = 0; index < len; index++) {
+   width = null; height = null; 
+   xmin = null; xmax = null; ymin = null; ymax = null;
+   xscl = null; xgrid = null; yscl = null; ygrid = null;
+   initialized = false;
+   picture = pictures[index];  // current picture object
+   src = picture.getAttribute("script"); // get the ASCIIsvg code
+   if (src==null) src = "";
+   // insert "axes()" if not present  ******** experimental
+   if (!/axes\b|initPicture/.test(src)) {
+     var i = 0
+     while (/((yscl|ymax|ymin|xscl|xmax|xmin|\bwidth|\bheight)\s*=\s*-?\d*(\d\.|\.\d|\d)\d*\s*;?)/.test(src.slice(i))) i++;
+     src = (i==0?"axes(); "+src: src.slice(0,i)+src.slice(i).replace(/((scl|max|min|idth|eight)\s*=\s*-?\d*(\d\.|\.\d|\d)\d*\s*;?)/,"$1\naxes();"));
+   }
+   ht = picture.getAttribute("height");
+   if (isIE) {
+     picture.setAttribute("wmode","transparent");
+//alert("*"+picture.getAttribute("src")+dsvglocation);
+//adding d.svg dynamically greates problems in IE...
+     if (picture.getAttribute("src")=="") picture.setAttribute("src",dsvglocation+"d.svg");
+   }
+   if (document.getElementById("picture"+(index+1)+"mml")==null) {
+     picture.parentNode.style.position = "relative";
+     node = myCreateElementXHTML("div");
+     node.style.position = "absolute";
+     node.style.top = "0px";
+     node.style.left = "0px";
+     node.setAttribute("id","picture"+(index+1)+"mml");
+     picture.parentNode.insertBefore(node,picture.nextSibling);
+   }
+   if (ht==null) ht ="";
+//   if (ht!="") defaultborder = 25;
+   if (ht=="" || src=="") 
+    if (document.getElementById("picture"+(index+1)+"input")==null) {
+      node = myCreateElementXHTML("textarea");
+      arr = src.split("\n");
+      cols = 0;
+      for (i=0;i<arr.length;i++) cols = Math.max(cols,arr[i].length);
+      node.setAttribute("rows",Math.min(10,arr.length)+1);
+      node.setAttribute("cols",Math.max(Math.min(60,cols),20)+5);
+//      node.setAttribute("style","display:block");
+      if (isIE) src = src.replace(/([^\r])\n/g,"$1\r");
+      node.appendChild(document.createTextNode(src));
+      if (src.indexOf("showcode()")==-1) node.style.display = "none";
+      node.setAttribute("id","picture"+(index+1)+"input");
+      picture.parentNode.insertBefore(node,picture.nextSibling);
+      picture.parentNode.insertBefore(myCreateElementXHTML("br"),node);
+      node2 = myCreateElementXHTML("button");
+      node2.setAttribute("id","picture"+(index+1)+"button");
+      if (isIE) node2.onclick = function() {updatePicture(this)};
+      else node2.setAttribute("onclick","updatePicture(this)");
+      node2.appendChild(document.createTextNode("Update"));
+      if (src.indexOf("showcode()")==-1) node2.style.display = "none";
+      picture.parentNode.insertBefore(node2,node);
+      picture.parentNode.insertBefore(myCreateElementXHTML("br"),node);
+    } else src = document.getElementById("picture"+(index+1)+"input").value;
+    id = picture.getAttribute("id");
+    dsvg = picture.getAttribute("src");
+    if (id == null || id == "") {
+      id = "picture"+(index+1);
+      picture.setAttribute("id",id);
+    }
+    translateandeval(src)
+  }
+ }
+}
+
+function setdefaults() { //called before each graph is evaluated
+  strokewidth = defaultstrokewidth;
+  stroke = defaultstroke;
+  strokeopacity = defaultstrokeopacity;
+  strokedasharray = defaultstrokedasharray;
+  fill = defaultfill;
+  fillopacity = defaultfillopacity;
+  fontstyle = defaultfontstyle;
+  fontfamily = defaultfontfamily;
+  fontsize = defaultfontsize;
+  fontweight = defaultfontweight;
+  fontstroke = defaultfontstroke;
+  fontfill = defaultfontfill;
+  marker = defaultmarker;
+  endpoints = defaultendpoints;
+}
+
+function switchTo(id) { // used by dynamic code to select appropriate graph
+  picture = document.getElementById(id);
+  width = picture.getAttribute("width")-0;
+  height = picture.getAttribute("height")-0;
+  setdefaults();
+  if ((picture.nodeName == "EMBED" || picture.nodeName == "embed") && isIE) {
+    svgpicture = picture.getSVGDocument().getElementById("root");
+    doc = picture.getSVGDocument();
+  } else {
+    svgpicture = picture;
+    doc = document;
+  }
+  xunitlength = svgpicture.getAttribute("xunitlength")-0;
+  yunitlength = svgpicture.getAttribute("yunitlength")-0;
+  xmin = svgpicture.getAttribute("xmin")-0;
+  xmax = svgpicture.getAttribute("xmax")-0;
+  ymin = svgpicture.getAttribute("ymin")-0;
+  ymax = svgpicture.getAttribute("ymax")-0;
+  origin = [svgpicture.getAttribute("ox")-0,svgpicture.getAttribute("oy")-0];
+}
+
+function updatePicture(obj) {
+  var node, src, id;
+  if (typeof obj=="object") id = obj.id.slice(0,-6);
+  else id = (typeof obj=="string"?obj:"picture"+(obj+1));
+  src = document.getElementById(id+"input").value;
+  xmin = null; xmax = null; ymin = null; ymax = null;
+  xscl = null; xgrid = null; yscl = null; ygrid = null;
+  initialized = false;
+  picture = document.getElementById(id);
+//  switchTo(id);
+  translateandeval(src)
+}
+
+function changepicturesize(evt,factor) {
+  var obj = evt.target;
+  var name = obj.parentNode.getAttribute("name");
+  var pic = document.getElementById(name);
+  var src = document.getElementById(name+"input").value;
+  src = src.replace(/width\s*=\s*\d+/,"width="+(factor*(pic.getAttribute("width")-0)));
+  src = src.replace(/height\s*=\s*\d+/,"height="+(factor*(pic.getAttribute("height")-0)));
+  document.getElementById(name+"input").value = src;
+//alert(getKey(evt.keycode))
+  updatePicture(name);
+}
+
+var sinceFirstClick = 0; // ondblclick simulation from 
+var dblClkTimer;         // http://www.enja.org/david/?cat=13 Thanks!
+function timer() {
+  if(sinceFirstClick<60) {
+    sinceFirstClick++;
+    setTimeout("timer()",10);
+  } else {
+    clearTimeout(dblClkTimer);
+    dblClkTimer = "";
+  }
+}
+function mClick(evt) {
+  if(sinceFirstClick!=0) {
+    if(sinceFirstClick <= 40) {
+      if (evt.shiftKey) changepicturesize(evt,2);
+      else if (evt.altKey) changepicturesize(evt,.5);
+      else showHideCode(evt);             // do this on dblclick
+      clearTimeout(dblClkTimer);
+      dblClkTimer = "";
+    } else {
+      clearTimeout(dblClkTimer);
+      sinceFirstClick = 0;
+      dblClkTimer = setTimeout("timer()",10);
+    }	      
+  } else {
+    sinceFirstClick = 0;
+    dblClkTimer = setTimeout("timer()",10);
+  }
+}
+
+function showHideCode(evt) { // called by onclick event
+//  if (evt.getDetail()==2) {//getDetail unfortunately not in Firefox
+  var obj=evt.target;
+  var name = obj.parentNode.getAttribute("name");
+  var node = document.getElementById(name+"input");
+  node.style.display = (node.style.display == "none"?"":"none");
+  var node = document.getElementById(name+"button");
+  node.style.display = (node.style.display == "none"?"":"none");
+//  }
+}
+
+function showcode() {} // do nothing
+
+function setBorder(x) { border = x } //deprecate
+
+function initPicture(x_min,x_max,y_min,y_max) { // set up the graph
+// usually called by axes() or noaxes(), but can be used directly
+ if (!initialized) {
+  setdefaults();
+  initialized = true;
+  if (x_min!=null) xmin = x_min;
+  if (x_max!=null) xmax = x_max;
+  if (y_min!=null) ymin = y_min;
+  if (y_max!=null) ymax = y_max;
+  if (xmin==null) xmin = defaultxmin;
+  if (xmax==null) xmax = defaultxmax;
+ if (typeof xmin != "number" || typeof xmax != "number" || xmin >= xmax) 
+   alert("Picture requires at least two numbers: xmin < xmax");
+ else if (y_max != null && (typeof y_min != "number" || 
+          typeof y_max != "number" || y_min >= y_max))
+   alert("initPicture(xmin,xmax,ymin,ymax) requires numbers ymin < ymax");
+ else {
+  if (width==null) {
+    width = picture.getAttribute("width");
+    if (width==null || width=="") width=defaultwidth;
+  }
+  picture.setAttribute("width",width);
+  if (height==null) { 
+    height = picture.getAttribute("height");
+    if (height==null || height=="") height=defaultheight;
+  }
+  picture.setAttribute("height",height);
+  xunitlength = (width-2*border)/(xmax-xmin);
+  yunitlength = xunitlength;
+//alert(xmin+" "+xmax+" "+ymin+" "+ymax)
+  if (ymin==null) {
+    origin = [-xmin*xunitlength+border,height/2];
+    ymin = -(height-2*border)/(2*yunitlength);
+    ymax = -ymin;
+  } else {
+    if (ymax!=null) yunitlength = (height-2*border)/(ymax-ymin);
+    else ymax = (height-2*border)/yunitlength + ymin;
+    origin = [-xmin*xunitlength+border,-ymin*yunitlength+border];
+  }
+  if (isIE) {
+    if (picture.FULLSCREEN==undefined) {
+      setTimeout('drawPictures()',50);
+      throw "wait";
+    }
+    svgpicture = picture.getSVGDocument().getElementById("root");
+    if (svgpicture==null) {
+      setTimeout('drawPictures()',50);
+      throw "wait";
+    }
+    svgpicture = picture.getSVGDocument().getElementById("root");
+    while (svgpicture.childNodes.length>0) 
+      svgpicture.removeChild(svgpicture.lastChild); 
+    svgpicture.setAttribute("width",width);
+    svgpicture.setAttribute("height",height);
+    svgpicture.setAttribute("name",picture.getAttribute("id"));
+    doc = picture.getSVGDocument();
+    var nd = document.getElementById(picture.getAttribute("id")+"mml");
+    if (nd!=null) // clear out MathML layer
+      while (nd.childNodes.length>0) nd.removeChild(nd.lastChild); 
+  } else {
+    var qnode = document.createElementNS("http://www.w3.org/2000/svg","svg");
+    qnode.setAttribute("id",picture.getAttribute("id"));
+    qnode.setAttribute("name",picture.getAttribute("id"));
+    qnode.setAttribute("style","display:inline");
+    qnode.setAttribute("width",picture.getAttribute("width"));
+    qnode.setAttribute("height",picture.getAttribute("height"));
+    picturepos = findPos(picture);
+    qnode.setAttribute("left",picturepos[0]);
+    qnode.setAttribute("top",picturepos[1]);
+//      qnode.setAttribute("xmlns:xlink","http://www.w3.org/1999/xlink");
+    if (picture.parentNode!=null) {
+      picture.parentNode.replaceChild(qnode,picture);
+    } else {
+      svgpicture.parentNode.replaceChild(qnode,svgpicture);
+    }
+    svgpicture = qnode;
+    doc = document;
+  }
+  svgpicture.setAttribute("xunitlength",xunitlength);
+  svgpicture.setAttribute("yunitlength",yunitlength);
+  svgpicture.setAttribute("xmin",xmin);
+  svgpicture.setAttribute("xmax",xmax);
+  svgpicture.setAttribute("ymin",ymin);
+  svgpicture.setAttribute("ymax",ymax);
+  svgpicture.setAttribute("ox",origin[0]);
+  svgpicture.setAttribute("oy",origin[1]);
+  var node = myCreateElementSVG("rect");
+  node.setAttribute("x","0");
+  node.setAttribute("y","0");
+  node.setAttribute("width",width);
+  node.setAttribute("height",height);
+  node.setAttribute("style",backgroundstyle);
+  svgpicture.appendChild(node);
+  svgpicture.setAttribute("onmousemove","displayCoord(evt)");
+  svgpicture.setAttribute("onmouseout","removeCoord(evt)");
+  svgpicture.setAttribute("onclick","mClick(evt)");
+  node = myCreateElementSVG("text");
+  node.appendChild(doc.createTextNode(" "));
+  svgpicture.appendChild(node);
+  border = defaultborder;
+ }
+ }
+}
+
+//////////////////////////user graphics commands start/////////////////////////
+
+function line(p,q,id,endpts) { // segment connecting points p,q (coordinates in units)
+  var node;
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("path");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  node.setAttribute("d","M"+(p[0]*xunitlength+origin[0])+","+
+    (height-p[1]*yunitlength-origin[1])+" "+
+    (q[0]*xunitlength+origin[0])+","+(height-q[1]*yunitlength-origin[1]));
+  node.setAttribute("stroke-width", strokewidth);
+  if (strokedasharray!=null) 
+    node.setAttribute("stroke-dasharray", strokedasharray);
+  node.setAttribute("stroke", stroke);
+  node.setAttribute("fill", fill);
+  node.setAttribute("stroke-opacity", strokeopacity);
+  node.setAttribute("fill-opacity", fillopacity);
+  if (marker=="dot" || marker=="arrowdot") {
+    ASdot(p,markersize,markerstroke,markerfill);
+    if (marker=="arrowdot") arrowhead(p,q);
+    ASdot(q,markersize,markerstroke,markerfill);
+  } else if (marker=="arrow") arrowhead(p,q);
+  if (endpts==null && endpoints!="") endpts = endpoints;
+  if (endpts!=null) {
+    if (endpts.indexOf("<-") != -1) arrowhead(q,p);
+    if (endpts.indexOf("o-") != -1) dot(p, "open");
+    if (endpts.indexOf("*-") != -1) dot(p, "closed");
+    if (endpts.indexOf("->") != -1) arrowhead(p,q);
+    if (endpts.indexOf("-o") != -1) dot(q, "open");
+    if (endpts.indexOf("-*") != -1) dot(q, "closed");
+  }
+}
+
+function path(plist,id,c,endpts) {
+  if (c==null) c="";
+  var node, st, i;
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("path");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  if (typeof plist == "string") st = plist;
+  else {
+    st = "M";
+    st += (plist[0][0]*xunitlength+origin[0])+","+
+          (height-plist[0][1]*yunitlength-origin[1])+" "+c;
+    for (i=1; i<plist.length; i++)
+      st += (plist[i][0]*xunitlength+origin[0])+","+
+            (height-plist[i][1]*yunitlength-origin[1])+" ";
+  }
+  node.setAttribute("d", st);
+  node.setAttribute("stroke-width", strokewidth);
+  if (strokedasharray!=null) 
+    node.setAttribute("stroke-dasharray", strokedasharray);
+  node.setAttribute("stroke", stroke);
+  node.setAttribute("fill", fill);
+  node.setAttribute("stroke-opacity", strokeopacity);
+  node.setAttribute("fill-opacity", fillopacity);
+  if (marker=="dot" || marker=="arrowdot")
+    for (i=0; i<plist.length; i++)
+      if (c!="C" && c!="T" || i!=1 && i!=2)
+        ASdot(plist[i],markersize,markerstroke,markerfill);
+  if (endpts==null && endpoints!="") endpts = endpoints;
+  if (endpts!=null) {
+    if (endpts.indexOf("<-") != -1) arrowhead(plist[1],plist[0]);
+    if (endpts.indexOf("o-") != -1) dot(plist[0], "open");
+    if (endpts.indexOf("*-") != -1) dot(plist[0], "closed");
+    if (endpts.indexOf("->") != -1) arrowhead(plist[plist.length-2],plist[plist.length-1]);
+    if (endpts.indexOf("-o") != -1) dot(plist[plist.length-1], "open");
+    if (endpts.indexOf("-*") != -1) dot(plist[plist.length-1], "closed");
+  }
+}
+
+function curve(plist,id,endpts) {
+  path(plist,id,"T",endpts);
+}
+
+function vector(p,q,id) {
+  line(p,q,id,"","->");
+}
+
+function circle(center,radius,id) { // coordinates in units
+  var node;
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("circle");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  node.setAttribute("cx",center[0]*xunitlength+origin[0]);
+  node.setAttribute("cy",height-center[1]*yunitlength-origin[1]);
+  node.setAttribute("r",radius*xunitlength);
+  node.setAttribute("stroke-width", strokewidth);
+  node.setAttribute("stroke", stroke);
+  node.setAttribute("fill", fill);
+  node.setAttribute("stroke-opacity", strokeopacity);
+  node.setAttribute("fill-opacity", fillopacity);
+}
+
+function loop(p,d,id) { 
+// d is a direction vector e.g. [1,0] means loop starts in that direction
+  if (d==null) d=[1,0];
+  path([p,[p[0]+d[0],p[1]+d[1]],[p[0]-d[1],p[1]+d[0]],p],id,"C");
+  if (marker=="arrow" || marker=="arrowdot") 
+    arrowhead([p[0]+Math.cos(1.4)*d[0]-Math.sin(1.4)*d[1],
+               p[1]+Math.sin(1.4)*d[0]+Math.cos(1.4)*d[1]],p);
+}
+
+function arc(start,end,radius,id) { // coordinates in units
+  var node, v;
+//alert([fill, stroke, origin, xunitlength, yunitlength, height])
+  if (id!=null) node = doc.getElementById(id);
+  if (radius==null) {
+    v=[end[0]-start[0],end[1]-start[1]];
+    radius = Math.sqrt(v[0]*v[0]+v[1]*v[1]);
+  }
+  if (node==null) {
+    node = myCreateElementSVG("path");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  node.setAttribute("d","M"+(start[0]*xunitlength+origin[0])+","+
+    (height-start[1]*yunitlength-origin[1])+" A"+radius*xunitlength+","+
+     radius*yunitlength+" 0 0,0 "+(end[0]*xunitlength+origin[0])+","+
+    (height-end[1]*yunitlength-origin[1]));
+  node.setAttribute("stroke-width", strokewidth);
+  node.setAttribute("stroke", stroke);
+  node.setAttribute("fill", fill);
+  node.setAttribute("stroke-opacity", strokeopacity);
+  node.setAttribute("fill-opacity", fillopacity);
+  if (marker=="arrow" || marker=="arrowdot") {
+    u = [(end[1]-start[1])/4,(start[0]-end[0])/4];
+    v = [(end[0]-start[0])/2,(end[1]-start[1])/2];
+//alert([u,v])
+    v = [start[0]+v[0]+u[0],start[1]+v[1]+u[1]];
+  } else v=[start[0],start[1]];
+  if (marker=="dot" || marker=="arrowdot") {
+    ASdot(start,markersize,markerstroke,markerfill);
+    if (marker=="arrowdot") arrowhead(v,end);
+    ASdot(end,markersize,markerstroke,markerfill);
+  } else if (marker=="arrow") arrowhead(v,end);
+}
+
+function sector(center,start,end,id) { // center,start,end should be isoceles
+  var rx = start[0]-center[0], ry = start[1]-center[1];
+  arc(start,end,Math.sqrt(rx*rx+ry*ry),id+"arc");
+  path([end,center,start],id+"path");
+}
+
+function ellipse(center,rx,ry,id) { // coordinates in units
+  var node;
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("ellipse");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  node.setAttribute("cx",center[0]*xunitlength+origin[0]);
+  node.setAttribute("cy",height-center[1]*yunitlength-origin[1]);
+  node.setAttribute("rx",rx*xunitlength);
+  node.setAttribute("ry",ry*yunitlength);
+  node.setAttribute("stroke-width", strokewidth);
+  node.setAttribute("stroke", stroke);
+  node.setAttribute("fill", fill);
+  node.setAttribute("stroke-opacity", strokeopacity);
+  node.setAttribute("fill-opacity", fillopacity);
+}
+
+function triangle(p,q,r,id) {
+  path([p,q,r,p],id)
+}
+
+function rect(p,q,id,rx,ry) { // opposite corners in units, rounded by radii
+  var node;
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("rect");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  node.setAttribute("x",p[0]*xunitlength+origin[0]);
+  node.setAttribute("y",height-q[1]*yunitlength-origin[1]);
+  node.setAttribute("width",(q[0]-p[0])*xunitlength);
+  node.setAttribute("height",(q[1]-p[1])*yunitlength);
+  if (rx!=null) node.setAttribute("rx",rx*xunitlength);
+  if (ry!=null) node.setAttribute("ry",ry*yunitlength);
+  node.setAttribute("stroke-width", strokewidth);
+  node.setAttribute("stroke", stroke);
+  node.setAttribute("fill", fill);
+  node.setAttribute("stroke-opacity", strokeopacity);
+  node.setAttribute("fill-opacity", fillopacity);
+}
+
+function text(p,st,pos,id,fontsty) {
+  var dnode, node, dx = 0, dy = fontsize/3;
+  if (/(`|\$)/.test(st)) {  // layer for ASCIIMathML and LaTeXMathML
+    dnode = document.getElementById(svgpicture.getAttribute("name")+"mml");
+    if (dnode!=null) {
+      if (id!=null) node = document.getElementById(id);
+      if (node==null) {
+//alert(dnode.childNodes.length)
+        node = myCreateElementXHTML("div");
+        node.setAttribute("id", id);
+        node.style.position = "absolute";
+        dnode.appendChild(node);
+      }
+      while (node.childNodes.length>0) node.removeChild(node.lastChild); 
+      node.appendChild(document.createTextNode(st));
+//      node.lastChild.nodeValue = st;
+      node.style.left = ""+(p[0]*xunitlength+origin[0])+"px";
+      node.style.top = ""+(height-p[1]*yunitlength-origin[1])+"px";
+      if (/`/.test(st)) AMprocessNode(node); else LMprocessNode(node);
+      dx = -node.offsetWidth/2;
+      dy = -node.offsetHeight/2;
+      if (pos!=null) {
+        if (/above/.test(pos)) dy = -node.offsetHeight;
+        if (/below/.test(pos)) dy = 0;
+        if (/right/.test(pos)) dx = 0;
+        if ( /left/.test(pos)) dx = -node.offsetWidth;
+      }
+      node.style.left = ""+(p[0]*xunitlength+origin[0]+dx)+"px";
+      node.style.top = ""+(height-p[1]*yunitlength-origin[1]+dy)+"px";
+    }
+    return p;
+  }
+  var textanchor = "middle";  // regular text goes into SVG
+  if (pos!=null) {
+    if (/above/.test(pos)) dy = -fontsize/2;
+    if (/below/.test(pos)) dy = fontsize-0;
+    if (/right/.test(pos)) {textanchor = "start"; dx = fontsize/4;}
+    if ( /left/.test(pos)) {textanchor = "end";  dx = -fontsize/4;}
+  }
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("text");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+    node.appendChild(doc.createTextNode(st));
+  }
+  while (node.childNodes.length>1) node.removeChild(node.lastChild); 
+//  node.appendChild(document.createTextNode("\xA0"+st+"\xA0"));
+//alert("here");
+  node.lastChild.nodeValue = "\xA0"+st+"\xA0";
+  node.setAttribute("x",p[0]*xunitlength+origin[0]+dx);
+  node.setAttribute("y",height-p[1]*yunitlength-origin[1]+dy);
+  node.setAttribute("font-style",(fontsty!=null?fontsty:
+    (st.search(/^[a-zA-Z]$/)!=-1?"italic":fontstyle)));
+  node.setAttribute("font-family",fontfamily);
+  node.setAttribute("font-size",fontsize);
+  node.setAttribute("font-weight",fontweight);
+  node.setAttribute("text-anchor",textanchor);
+  if (fontstroke!="none") node.setAttribute("stroke",fontstroke);
+  if (fontfill!="none") node.setAttribute("fill",fontfill);
+  return p;
+}
+
+function mtext(p,st,pos,fontsty) { // method for updating text on an svg
+// "this" is the text object or the svgpicture object
+  var textanchor = "middle";
+  var dx = 0; var dy = fontsize/3;
+  if (pos!=null) {
+    if (pos.slice(0,5)=="above") dy = -fontsize/2;
+    if (pos.slice(0,5)=="below") dy = fontsize-0;
+    if (pos.slice(0,5)=="right" || pos.slice(5,10)=="right") {
+      textanchor = "start";
+      dx = fontsize/2;
+    }
+    if (pos.slice(0,4)=="left" || pos.slice(5,9)=="left") {
+      textanchor = "end";
+      dx = -fontsize/2;
+    }
+  }
+  var node = this;
+  if (this.nodeName=="svg") {
+    node = myCreateElementSVG("text");
+    this.appendChild(node);
+    node.appendChild(doc.createTextNode(st));
+  }
+  node.lastChild.nodeValue = st;
+  node.setAttribute("x",p[0]+dx);
+  node.setAttribute("y",p[1]+dy);
+  node.setAttribute("font-style",(fontsty!=null?fontsty:fontstyle));
+  node.setAttribute("font-family",fontfamily);
+  node.setAttribute("font-size",fontsize);
+  node.setAttribute("font-weight",fontweight);
+  node.setAttribute("text-anchor",textanchor);
+  if (fontstroke!="none") node.setAttribute("stroke",fontstroke);
+  if (fontfill!="none") node.setAttribute("fill",fontfill);
+}
+
+function image(imgurl,p,w,h,id) { // not working yet
+  var node;
+  if (id!=null) node = doc.getElementById(id);
+  if (node==null) {
+    node = myCreateElementSVG("image");
+    node.setAttribute("id", id);
+    svgpicture.appendChild(node);
+  }
+  node.setAttribute("x",p[0]*xunitlength+origin[0]);
+  node.setAttribute("y",height-p[1]*yunitlength-origin[1]);
+  node.setAttribute("width",w);
+  node.setAttribute("height",h);
+  node.setAttribute("xlink:href", imgurl);
+}
+
+function ASdot(center,radius,s,f) { // coordinates in units, radius in pixel
+  if (s==null) s = stroke; if (f==null) f = fill;
+  var node = myCreateElementSVG("circle");
+  node.setAttribute("cx",center[0]*xunitlength+origin[0]);
+  node.setAttribute("cy",height-center[1]*yunitlength-origin[1]);
+  node.setAttribute("r",radius);
+  node.setAttribute("stroke-width", strokewidth);
+  node.setAttribute("stroke", s);
+  node.setAttribute("fill", f);
+  svgpicture.appendChild(node);
+}
+
+function dot(center, typ, label, pos, id) {
+  var node;
+  var cx = center[0]*xunitlength+origin[0];
+  var cy = height-center[1]*yunitlength-origin[1];
+  if (id!=null) node = doc.getElementById(id);
+  if (typ=="+" || typ=="-" || typ=="|") {
+    if (node==null) {
+      node = myCreateElementSVG("path");
+      node.setAttribute("id", id);
+      svgpicture.appendChild(node);
+    }
+    if (typ=="+") {
+      node.setAttribute("d",
+        " M "+(cx-ticklength)+" "+cy+" L "+(cx+ticklength)+" "+cy+
+        " M "+cx+" "+(cy-ticklength)+" L "+cx+" "+(cy+ticklength));
+      node.setAttribute("stroke-width", .5);
+      node.setAttribute("stroke", axesstroke);
+    } else {
+      if (typ=="-") node.setAttribute("d",
+        " M "+(cx-ticklength)+" "+cy+" L "+(cx+ticklength)+" "+cy);
+      else node.setAttribute("d",
+        " M "+cx+" "+(cy-ticklength)+" L "+cx+" "+(cy+ticklength));
+      node.setAttribute("stroke-width", strokewidth);
+      node.setAttribute("stroke", stroke);
+    }
+  } else {
+    if (node==null) {
+      node = myCreateElementSVG("circle");
+      node.setAttribute("id", id);
+      svgpicture.appendChild(node);
+    }
+    node.setAttribute("cx",cx);
+    node.setAttribute("cy",cy);
+    node.setAttribute("r",dotradius);
+    node.setAttribute("stroke-width", strokewidth);
+    node.setAttribute("stroke", stroke);
+    node.setAttribute("fill", (typ=="open"?"white":
+                              (typ=="closed"?stroke:markerfill)));
+  }
+  if (label!=null) 
+    text(center,label,(pos==null?"below":pos),(id==null?id:id+"label"))
+}
+
+point = dot; //alternative name
+
+function arrowhead(p,q) { // draw arrowhead at q (in units) add size param
+  var up;
+  var v = [p[0]*xunitlength+origin[0],height-p[1]*yunitlength-origin[1]];
+  var w = [q[0]*xunitlength+origin[0],height-q[1]*yunitlength-origin[1]];
+  var u = [w[0]-v[0],w[1]-v[1]];
+  var d = Math.sqrt(u[0]*u[0]+u[1]*u[1]);
+  if (d > 0.00000001) {
+    u = [u[0]/d, u[1]/d];
+    up = [-u[1],u[0]];
+    var node = myCreateElementSVG("path");
+    node.setAttribute("d","M "+(w[0]-15*u[0]-4*up[0])+" "+
+      (w[1]-15*u[1]-4*up[1])+" L "+(w[0]-3*u[0])+" "+(w[1]-3*u[1])+" L "+
+      (w[0]-15*u[0]+4*up[0])+" "+(w[1]-15*u[1]+4*up[1])+" z");
+    node.setAttribute("stroke-width", markerstrokewidth);
+    node.setAttribute("stroke", stroke); /*was markerstroke*/
+    node.setAttribute("fill", stroke); /*was arrowfill*/
+    node.setAttribute("stroke-opacity", strokeopacity);
+    node.setAttribute("fill-opacity", fillopacity);
+    svgpicture.appendChild(node);    
+  }
+}
+
+function chopZ(st) {
+  var k = st.indexOf(".");
+  if (k==-1) return st;
+  for (var i=st.length-1; i>k && st.charAt(i)=="0"; i--);
+  if (i==k) i--;
+  return st.slice(0,i+1);
+}
+
+function grid(dx,dy) { // for backward compatibility
+  axes(dx,dy,null,dx,dy)
+}
+
+function noaxes() {
+  if (!initialized) initPicture();
+}
+
+function axes(dx,dy,labels,gdx,gdy) {
+//xscl=x is equivalent to xtick=x; xgrid=x; labels=true;
+  var x, y, ldx, ldy, lx, ly, lxp, lyp, pnode, st;
+  if (!initialized) initPicture();
+  if (typeof dx=="string") { labels = dx; dx = null; }
+  if (typeof dy=="string") { gdx = dy; dy = null; }
+  if (xscl!=null) {dx = xscl; gdx = xscl; labels = dx}
+  if (yscl!=null) {dy = yscl; gdy = yscl}
+  if (xtick!=null) {dx = xtick}
+  if (ytick!=null) {dy = ytick}
+  dx = (dx==null?xunitlength:dx*xunitlength);
+  dy = (dy==null?dx:dy*yunitlength);
+  fontsize = Math.min(dx/2,dy/2,16); //alert(fontsize)
+  ticklength = fontsize/4;
+  if (xgrid!=null) gdx = xgrid;
+  if (ygrid!=null) gdy = ygrid;
+  if (gdx!=null) {
+    gdx = (typeof gdx=="string"?dx:gdx*xunitlength);
+    gdy = (gdy==null?dy:gdy*yunitlength);
+    pnode = myCreateElementSVG("path");
+    st="";
+    for (x = origin[0]; x<width; x = x+gdx)
+      st += " M"+x+",0"+" "+x+","+height;
+    for (x = origin[0]-gdx; x>0; x = x-gdx)
+      st += " M"+x+",0"+" "+x+","+height;
+    for (y = height-origin[1]; y<height; y = y+gdy)
+      st += " M0,"+y+" "+width+","+y;
+    for (y = height-origin[1]-gdy; y>0; y = y-gdy)
+      st += " M0,"+y+" "+width+","+y;
+    pnode.setAttribute("d",st);
+    pnode.setAttribute("stroke-width", .5);
+    pnode.setAttribute("stroke", gridstroke);
+    pnode.setAttribute("fill", fill);
+    svgpicture.appendChild(pnode);
+  }
+  pnode = myCreateElementSVG("path");
+  st="M0,"+(height-origin[1])+" "+width+","+
+    (height-origin[1])+" M"+origin[0]+",0 "+origin[0]+","+height;
+  for (x = origin[0]+dx; x<width; x = x+dx)
+    st += " M"+x+","+(height-origin[1]+ticklength)+" "+x+","+
+           (height-origin[1]-ticklength);
+  for (x = origin[0]-dx; x>0; x = x-dx)
+    st += " M"+x+","+(height-origin[1]+ticklength)+" "+x+","+
+           (height-origin[1]-ticklength);
+  for (y = height-origin[1]+dy; y<height; y = y+dy)
+    st += " M"+(origin[0]+ticklength)+","+y+" "+(origin[0]-ticklength)+","+y;
+  for (y = height-origin[1]-dy; y>0; y = y-dy)
+    st += " M"+(origin[0]+ticklength)+","+y+" "+(origin[0]-ticklength)+","+y;
+  if (labels!=null) with (Math) {
+    ldx = dx/xunitlength;
+    ldy = dy/yunitlength;
+    lx = (xmin>0 || xmax<0?xmin:0);
+    ly = (ymin>0 || ymax<0?ymin:0);
+    lxp = (ly==0?"below":"above");
+    lyp = (lx==0?"left":"right");
+    var ddx = floor(1.1-log(ldx)/log(10))+1;
+    var ddy = floor(1.1-log(ldy)/log(10))+1;
+    for (x = ldx; x<=xmax; x = x+ldx)
+      text([x,ly],chopZ(x.toFixed(ddx)),lxp);
+    for (x = -ldx; xmin<=x; x = x-ldx)
+      text([x,ly],chopZ(x.toFixed(ddx)),lxp);
+    for (y = ldy; y<=ymax; y = y+ldy)
+      text([lx,y],chopZ(y.toFixed(ddy)),lyp);
+    for (y = -ldy; ymin<=y; y = y-ldy)
+      text([lx,y],chopZ(y.toFixed(ddy)),lyp);
+  }
+  fontsize = defaultfontsize;
+  pnode.setAttribute("d",st);
+  pnode.setAttribute("stroke-width", .5);
+  pnode.setAttribute("stroke", axesstroke);
+  pnode.setAttribute("fill", fill);
+  pnode.setAttribute("stroke-opacity", strokeopacity);
+  pnode.setAttribute("fill-opacity", fillopacity);
+  svgpicture.appendChild(pnode);
+}
+
+function mathjs(st) {
+  //translate a math formula to js function notation
+  // a^b --> pow(a,b)
+  // na --> n*a
+  // (...)d --> (...)*d
+  // n! --> factorial(n)
+  // sin^-1 --> arcsin etc.
+  //while ^ in string, find term on left and right
+  //slice and concat new formula string
+  st = st.replace(/\s/g,"");
+  if (st.indexOf("^-1")!=-1) {
+    st = st.replace(/sin\^-1/g,"arcsin");
+    st = st.replace(/cos\^-1/g,"arccos");
+    st = st.replace(/tan\^-1/g,"arctan");
+    st = st.replace(/sec\^-1/g,"arcsec");
+    st = st.replace(/csc\^-1/g,"arccsc");
+    st = st.replace(/cot\^-1/g,"arccot");
+    st = st.replace(/sinh\^-1/g,"arcsinh");
+    st = st.replace(/cosh\^-1/g,"arccosh");
+    st = st.replace(/tanh\^-1/g,"arctanh");
+    st = st.replace(/sech\^-1/g,"arcsech");
+    st = st.replace(/csch\^-1/g,"arccsch");
+    st = st.replace(/coth\^-1/g,"arccoth");
+  }
+  st = st.replace(/^e$/g,"(Math.E)");
+  st = st.replace(/^e([^a-zA-Z])/g,"(Math.E)$1");
+  st = st.replace(/([^a-zA-Z])e/g,"$1(Math.E)");
+//  st = st.replace(/([^a-zA-Z])e([^a-zA-Z])/g,"$1(Math.E)$2");
+  st = st.replace(/([0-9])([\(a-zA-Z])/g,"$1*$2");
+  st = st.replace(/\)([\(0-9a-zA-Z])/g,"\)*$1");
+  var i,j,k, ch, nested;
+  while ((i=st.indexOf("^"))!=-1) {
+    //find left argument
+    if (i==0) return "Error: missing argument";
+    j = i-1;
+    ch = st.charAt(j);
+    if (ch>="0" && ch<="9") {// look for (decimal) number
+      j--;
+      while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
+      if (ch==".") {
+        j--;
+        while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
+      }
+    } else if (ch==")") {// look for matching opening bracket and function name
+      nested = 1;
+      j--;
+      while (j>=0 && nested>0) {
+        ch = st.charAt(j);
+        if (ch=="(") nested--;
+        else if (ch==")") nested++;
+        j--;
+      }
+      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
+        j--;
+    } else if (ch>="a" && ch<="z" || ch>="A" && ch<="Z") {// look for variable
+      j--;
+      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
+        j--;
+    } else { 
+      return "Error: incorrect syntax in "+st+" at position "+j;
+    }
+    //find right argument
+    if (i==st.length-1) return "Error: missing argument";
+    k = i+1;
+    ch = st.charAt(k);
+    if (ch>="0" && ch<="9" || ch=="-") {// look for signed (decimal) number
+      k++;
+      while (k<st.length && (ch=st.charAt(k))>="0" && ch<="9") k++;
+      if (ch==".") {
+        k++;
+        while (k<st.length && (ch=st.charAt(k))>="0" && ch<="9") k++;
+      }
+    } else if (ch=="(") {// look for matching closing bracket and function name
+      nested = 1;
+      k++;
+      while (k<st.length && nested>0) {
+        ch = st.charAt(k);
+        if (ch=="(") nested++;
+        else if (ch==")") nested--;
+        k++;
+      }
+    } else if (ch>="a" && ch<="z" || ch>="A" && ch<="Z") {// look for variable
+      k++;
+      while (k<st.length && (ch=st.charAt(k))>="a" && ch<="z" ||
+               ch>="A" && ch<="Z") k++;
+    } else { 
+      return "Error: incorrect syntax in "+st+" at position "+k;
+    }
+    st = st.slice(0,j+1)+"Math.pow("+st.slice(j+1,i)+","+st.slice(i+1,k)+")"+
+           st.slice(k);
+  }
+  while ((i=st.indexOf("!"))!=-1) {
+    //find left argument
+    if (i==0) return "Error: missing argument";
+    j = i-1;
+    ch = st.charAt(j);
+    if (ch>="0" && ch<="9") {// look for (decimal) number
+      j--;
+      while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
+      if (ch==".") {
+        j--;
+        while (j>=0 && (ch=st.charAt(j))>="0" && ch<="9") j--;
+      }
+    } else if (ch==")") {// look for matching opening bracket and function name
+      nested = 1;
+      j--;
+      while (j>=0 && nested>0) {
+        ch = st.charAt(j);
+        if (ch=="(") nested--;
+        else if (ch==")") nested++;
+        j--;
+      }
+      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
+        j--;
+    } else if (ch>="a" && ch<="z" || ch>="A" && ch<="Z") {// look for variable
+      j--;
+      while (j>=0 && (ch=st.charAt(j))>="a" && ch<="z" || ch>="A" && ch<="Z")
+        j--;
+    } else { 
+      return "Error: incorrect syntax in "+st+" at position "+j;
+    }
+    st = st.slice(0,j+1)+"factorial("+st.slice(j+1,i)+")"+st.slice(i+1);
+  }
+  return st;
+}
+
+function plot(fun,x_min,x_max,points,id,endpts) {
+  var pth = [];
+  var f = function(x) { return x }, g = fun;
+  var name = null;
+  if (typeof fun=="string") 
+    eval("g = function(x){ with(Math) return "+mathjs(fun)+" }");
+  else if (typeof fun=="object") {
+    eval("f = function(t){ with(Math) return "+mathjs(fun[0])+" }");
+    eval("g = function(t){ with(Math) return "+mathjs(fun[1])+" }");
+  }
+  if (typeof x_min=="string") { name = x_min; x_min = xmin }
+  else name = id;
+  var min = (x_min==null?xmin:x_min);
+  var max = (x_max==null?xmax:x_max);
+  var inc = max-min-0.000001*(max-min);
+  inc = (points==null?inc/200:inc/points);
+  var gt;
+//alert(typeof g(min))
+  for (var t = min; t <= max; t += inc) {
+    gt = g(t);
+    if (!(isNaN(gt)||Math.abs(gt)=="Infinity")) pth[pth.length] = [f(t), gt];
+  }
+  path(pth,name,null,endpts);
+  return p;
+}
+
+// make polar plot
+
+// make Riemann sums
+
+function slopefield(fun,dx,dy) {
+  var g = fun;
+  if (typeof fun=="string") 
+    eval("g = function(x,y){ with(Math) return "+mathjs(fun)+" }");
+  var gxy,x,y,u,v,dz;
+  if (dx==null) dx=1;
+  if (dy==null) dy=1;
+  dz = Math.sqrt(dx*dx+dy*dy)/6;
+  var x_min = Math.ceil(xmin/dx);
+  var y_min = Math.ceil(ymin/dy);
+  for (x = x_min; x <= xmax; x += dx)
+    for (y = y_min; y <= ymax; y += dy) {
+      gxy = g(x,y);
+      if (!isNaN(gxy)) {
+        if (Math.abs(gxy)=="Infinity") {u = 0; v = dz;}
+        else {u = dz/Math.sqrt(1+gxy*gxy); v = gxy*u;}
+        line([x-u,y-v],[x+u,y+v]);
+      }
+    }
+}
+
+///////////////////////user graphics commands end here/////////////////////////
+
+function show_props(obj) {
+  var result = "";
+  for (var i=0; i< obj.childNodes.length; i++)
+    result += obj.childNodes.item(i) + "\n";
+  return result;
+}
+
+function displayCoord(evt) {
+  if (showcoordinates) {
+//alert(show_props(evt.target.parentNode))
+    var svgroot = evt.target.parentNode;
+    var nl = svgroot.childNodes;
+    for (var i=0; i<nl.length && nl.item(i).nodeName!="text"; i++);
+    var cnode = nl.item(i);
+    cnode.mtext = mtext;
+    cnode.mtext([svgroot.getAttribute("width")-0,svgroot.getAttribute("height")-0],"("+getX(evt).toFixed(2)+", "+getY(evt).toFixed(2)+")", "aboveleft", "");
+  }
+}
+
+function removeCoord(evt) {
+    var svgroot = evt.target.parentNode;
+    var nl = svgroot.childNodes;
+    for (var i=0; i<nl.length && nl.item(i).nodeName!="text"; i++);
+    var cnode = nl.item(i);
+    cnode.mtext = mtext;
+    cnode.mtext([svgroot.getAttribute("width")-0,svgroot.getAttribute("height")-0],"", "aboveleft", "");
+}
+
+function initASCIIMathCalculators(li) {
+  var i;
+  for (i=0; i<li.length; i++) {
+    li[i].innerHTML = calcstr;
+    AMprocessNode(li[i]);
+  }
+  li = document.getElementsByTagName("textarea");
+  var st;
+  for (i=0; i<li.length; i++) {
+    st = li[i].getAttribute("onkeyup");
+    if (st!=null) eval(String(st).replace(/function anonymous\(\)/,""));
+  }
+}
+
+function calculate(inputId,outputId) {
+  var str = document.getElementById(inputId).value;
+  var err = "";
+  var ind = str.lastIndexOf("\n");
+  if (ind==str.length-1) str = str.slice(0,ind);
+  str = str.slice(str.lastIndexOf("\n")+1);
+  try {
+    var res = eval(mathjs(str));
+  } catch(e) {
+    err = "syntax incomplete";
+  }
+  if (!isNaN(res) && res!="Infinity") 
+    str = "`"+str+" =` "+(Math.abs(res-Math.round(res*1000000)/1000000)<1e-15?Math.round(res*1000000)/1000000:res)+err; 
+  else if (str!="") str = "`"+str+"` = undefined"; //debug:+mathjs(str);
+  var outnode = document.getElementById(outputId);
+  var n = outnode.childNodes.length;
+  for (var i=0; i<n; i++)
+    outnode.removeChild(outnode.firstChild);
+  outnode.appendChild(document.createTextNode(str));
+  AMprocessNode(outnode);
+}
+
+function append(st){
+  document.getElementById('in').value+=st;
+  calculate('in','out');
+  document.getElementById('in').scrollTop = 1000;
+  document.getElementById('in').focus();
+}
+
+function clearTextArea(){
+  document.getElementById('in').value="";
+  calculate('in','out');
+  document.getElementById('in').focus();
+}
+
+var calcstr = "<table align=\"center\">\n<tr><th>\nASCIIMath Scientific Calculator\n</th></tr>\n<tr><td>\nClick in the box to use your keyboard or use the buttons\n</td></tr>\n<tr><td>\n<textarea id=\"in\" rows=\"3\" cols=\"40\" onkeyup=\"calculate('in','out')\"></textarea></td></tr>\n<tr><td height=\"50\">Result: &nbsp; &nbsp; <span id=\"out\"></span></td></tr>\n</table>\n<table align=\"center\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody align=\"center\">\n<tr>\n<td colspan=\"4\">\n<button onclick=\"append('sin^-1(')\"><font size=2>`sin^-1`</font></button><button onclick=\"append('cos^-1(')\"><font size=2>`cos^-1`</font></button><button onclick=\"append('tan^-1(')\"><font size=2>`tan^-1`</font></button></td>\n<td><button onclick=\"clearTextArea()\">&nbsp;`C`&nbsp;</button></td>\n\n</tr>\n<tr>\n<td><button onclick=\"append('pi')\">&nbsp;`pi` &nbsp;</button></td>\n<td><button onclick=\"append('sin(')\">&nbsp;`sin`</button></td>\n<td><button onclick=\"append('cos(')\">&nbsp;`cos`</button></td>\n<td><button onclick=\"append('tan(')\">&nbsp;`tan`</button></td>\n<td><button onclick=\"append('^')\">`x^y`</button></td>\n</tr>\n<tr>\n<td><button onclick=\"append('!')\">&nbsp; `!` &nbsp;</button></td>\n\n<td><button onclick=\"append('(')\"><font size=2>&nbsp;&nbsp;`(`&nbsp;&nbsp;</font></button></td>\n<td><button onclick=\"append(')')\"><font size=2>&nbsp;&nbsp;`)`&nbsp;&nbsp;</font></button></td>\n<td><button onclick=\"append('sqrt(')\"><font size=2>`sqrt({::}^\ )`</font></button></td>\n<td><button onclick=\"append('/')\">&nbsp;`-:\ `</button></td>\n</tr>\n<tr>\n<td><button onclick=\"append('log(')\">`log`</button></td>\n<td><button onclick=\"append('7')\">&nbsp; `7` &nbsp;</button></td>\n<td><button onclick=\"append('8')\">&nbsp; `8` &nbsp;</button></td>\n\n<td><button onclick=\"append('9')\">&nbsp; `9` &nbsp;</button></td>\n<td><button onclick=\"append('*')\">&nbsp;`times`&nbsp;</button></td>\n</tr>\n<tr>\n<td><button onclick=\"append('ln(')\">&nbsp;`ln`&nbsp;</button></td>\n<td><button onclick=\"append('4')\">&nbsp; `4` &nbsp;</button></td>\n<td><button onclick=\"append('5')\">&nbsp; `5` &nbsp;</button></td>\n<td><button onclick=\"append('6')\">&nbsp; `6` &nbsp;</button></td>\n\n<td><button onclick=\"append('-')\">&nbsp;`-{::}`&nbsp;</button></td>\n</tr>\n<tr>\n<td><button onclick=\"append('e')\">&nbsp; `e` &nbsp;</button></td>\n<td><button onclick=\"append('1')\">&nbsp;&nbsp;`1` &nbsp;</button></td>\n<td><button onclick=\"append('2')\">&nbsp; `2` &nbsp;</button></td>\n<td><button onclick=\"append('3')\">&nbsp; `3` &nbsp;</button></td>\n<td><button onclick=\"append('+')\">&nbsp;`+{::}`&nbsp;</button></td>\n\n</tr>\n<tr>\n<td> <!--button onclick=\"append('pi')\">&nbsp;`pi` &nbsp;</button--></td>\n<td><button onclick=\"append('0')\">&nbsp; `0` &nbsp;</button></td>\n<td><button onclick=\"append('.')\">&nbsp; `.` &nbsp;</button></td>\n<td><button onclick=\"append('\\n')\">&nbsp;`\"ent\"`</button></td>\n</tr>\n</tbody>\n</table>";
+
+// GO1.1 Generic onload by Brothercake
+// http://www.brothercake.com/
+//onload function (replaces the onload="translate()" in the <body> tag)
+function generic()
+{
+  if (translateOnLoad) {
+    var nd = document.getElementById("processasciimathinmoodle");
+    if (nd!=null) dsvglocation = nd.className;
+    if (nd!=null || !checkforprocessasciimathinmoodle) {
+      if (translateLaTeX) LMtranslate();
+      if (translateASCIIMath) translate();
+      if (translateASCIIsvg) drawPictures();
+    }
+    var li = getElementsByClass(document,"div","ASCIIMathCalculator");
+    if (li.length>0) initASCIIMathCalculators(li);
+  }
+};
+//setup onload function
+if(typeof window.addEventListener != 'undefined')
+{
+  //.. gecko, safari, konqueror and standard
+  window.addEventListener('load', generic, false);
+}
+else if(typeof document.addEventListener != 'undefined')
+{
+  //.. opera 7
+  document.addEventListener('load', generic, false);
+}
+else if(typeof window.attachEvent != 'undefined')
+{
+  //.. win/ie
+  window.attachEvent('onload', generic);
+}
+//** remove this condition to degrade older browsers
+else
+{
+  //.. mac/ie5 and anything else that gets this far
+  //if there's an existing onload function
+  if(typeof window.onload == 'function')
+  {
+    //store it
+    var existing = onload;
+    //add new onload handler
+    window.onload = function()
+    {
+      //call existing onload function
+      existing();
+      //call generic onload function
+      generic();
+    };
+  }
+  else
+  {
+    //setup onload function
+    window.onload = generic;
+  }
+}
+
diff -r ce92c17cadc5 -r 5ff35e8e16e2 src/cm/media/js/lib/asciimathtml/ASCIIMathML.min.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/asciimathtml/ASCIIMathML.min.js	Mon Jan 23 11:14:44 2012 +0100
@@ -0,0 +1,1 @@
+var mathcolor="blue";var mathfontsize="1em";var mathfontfamily="serif";var automathrecognize=false;var checkForMathML=true;var notifyIfNoMathML=true;var alertIfNoMathML=false;var translateOnLoad=true;var translateLaTeX=true;var translateLaTeXformatting=true;var translateASCIIMath=true;var translateASCIIsvg=true;var avoidinnerHTML=false;var displaystyle=true;var showasciiformulaonhover=true;var decimalsign=".";var AMdelimiter1="`",AMescape1="\\\\`";var AMdocumentId="wikitext";var checkforprocessasciimathinmoodle=false;var dsvglocation="";var isIE=document.createElementNS==null;if(document.getElementById==null){alert("This webpage requires a recent browser such as\nMozilla/Netscape 7+ or Internet Explorer 6+MathPlayer")}function AMcreateElementXHTML(f){if(isIE){return document.createElement(f)}else{return document.createElementNS("http://www.w3.org/1999/xhtml",f)}}function AMnoMathMLNote(){var g=AMcreateElementXHTML("h3");g.setAttribute("align","center");g.appendChild(AMcreateElementXHTML("p"));g.appendChild(document.createTextNode("To view the "));var f=AMcreateElementXHTML("a");f.appendChild(document.createTextNode("ASCIIMathML"));f.setAttribute("href","http://www.chapman.edu/~jipsen/asciimath.html");g.appendChild(f);g.appendChild(document.createTextNode(" notation use Internet Explorer 6+"));f=AMcreateElementXHTML("a");f.appendChild(document.createTextNode("MathPlayer"));f.setAttribute("href","http://www.dessci.com/en/products/mathplayer/download.htm");g.appendChild(f);g.appendChild(document.createTextNode(" or Netscape/Mozilla/Firefox"));g.appendChild(AMcreateElementXHTML("p"));return g}function AMisMathMLavailable(){if(navigator.appName.slice(0,8)=="Netscape"){if(navigator.appVersion.slice(0,1)>="5"){return null}else{return AMnoMathMLNote()}}else{if(navigator.appName.slice(0,9)=="Microsoft"){try{var g=new ActiveXObject("MathPlayer.Factory.1");return null}catch(f){return 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AMsqrt={input:"sqrt",tag:"msqrt",output:"sqrt",tex:null,ttype:UNARY},AMroot={input:"root",tag:"mroot",output:"root",tex:null,ttype:BINARY},AMfrac={input:"frac",tag:"mfrac",output:"/",tex:null,ttype:BINARY},AMdiv={input:"/",tag:"mfrac",output:"/",tex:null,ttype:INFIX},AMover={input:"stackrel",tag:"mover",output:"stackrel",tex:null,ttype:BINARY},AMsub={input:"_",tag:"msub",output:"_",tex:null,ttype:INFIX},AMsup={input:"^",tag:"msup",output:"^",tex:null,ttype:INFIX},AMtext={input:"text",tag:"mtext",output:"text",tex:null,ttype:TEXT},AMmbox={input:"mbox",tag:"mtext",output:"mbox",tex:null,ttype:TEXT},AMquote={input:'"',tag:"mtext",output:"mbox",tex:null,ttype:TEXT};var 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h=document.getElementById(g+"input");h.style.display=(h.style.display=="none"?"":"none");var h=document.getElementById(g+"button");h.style.display=(h.style.display=="none"?"":"none")}function showcode(){}function setBorder(f){border=f}function initPicture(m,k,h,f){if(!initialized){setdefaults();initialized=true;if(m!=null){xmin=m}if(k!=null){xmax=k}if(h!=null){ymin=h}if(f!=null){ymax=f}if(xmin==null){xmin=defaultxmin}if(xmax==null){xmax=defaultxmax}if(typeof xmin!="number"||typeof xmax!="number"||xmin>=xmax){alert("Picture requires at least two numbers: xmin < xmax")}else{if(f!=null&&(typeof h!="number"||typeof f!="number"||h>=f)){alert("initPicture(xmin,xmax,ymin,ymax) requires numbers ymin < 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l=document.getElementById(picture.getAttribute("id")+"mml");if(l!=null){while(l.childNodes.length>0){l.removeChild(l.lastChild)}}}else{var g=document.createElementNS("http://www.w3.org/2000/svg","svg");g.setAttribute("id",picture.getAttribute("id"));g.setAttribute("name",picture.getAttribute("id"));g.setAttribute("style","display:inline");g.setAttribute("width",picture.getAttribute("width"));g.setAttribute("height",picture.getAttribute("height"));picturepos=findPos(picture);g.setAttribute("left",picturepos[0]);g.setAttribute("top",picturepos[1]);if(picture.parentNode!=null){picture.parentNode.replaceChild(g,picture)}else{svgpicture.parentNode.replaceChild(g,svgpicture)}svgpicture=g;doc=document}svgpicture.setAttribute("xunitlength",xunitlength);svgpicture.setAttribute("yunitlength",yunitlength);svgpicture.setAttribute("xmin",xmin);svgpicture.setAttribute("xmax",xmax);svgpicture.setAttribute("ymin",ymin);svgpicture.setAttribute("ymax",ymax);svgpicture.setAttribute("ox",origin[0]);svgpicture.setAttribute("oy",origin[1]);var j=myCreateElementSVG("rect");j.setAttribute("x","0");j.setAttribute("y","0");j.setAttribute("width",width);j.setAttribute("height",height);j.setAttribute("style",backgroundstyle);svgpicture.appendChild(j);svgpicture.setAttribute("onmousemove","displayCoord(evt)");svgpicture.setAttribute("onmouseout","removeCoord(evt)");svgpicture.setAttribute("onclick","mClick(evt)");j=myCreateElementSVG("text");j.appendChild(doc.createTextNode(" "));svgpicture.appendChild(j);border=defaultborder}}}}function line(j,h,k,g){var f;if(k!=null){f=doc.getElementById(k)}if(f==null){f=myCreateElementSVG("path");f.setAttribute("id",k);svgpicture.appendChild(f)}f.setAttribute("d","M"+(j[0]*xunitlength+origin[0])+","+(height-j[1]*yunitlength-origin[1])+" 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h;if(j!=null){h=doc.getElementById(j)}if(h==null){h=myCreateElementSVG("circle");h.setAttribute("id",j);svgpicture.appendChild(h)}h.setAttribute("cx",g[0]*xunitlength+origin[0]);h.setAttribute("cy",height-g[1]*yunitlength-origin[1]);h.setAttribute("r",f*xunitlength);h.setAttribute("stroke-width",strokewidth);h.setAttribute("stroke",stroke);h.setAttribute("fill",fill);h.setAttribute("stroke-opacity",strokeopacity);h.setAttribute("fill-opacity",fillopacity)}function loop(f,g,h){if(g==null){g=[1,0]}path([f,[f[0]+g[0],f[1]+g[1]],[f[0]-g[1],f[1]+g[0]],f],h,"C");if(marker=="arrow"||marker=="arrowdot"){arrowhead([f[0]+Math.cos(1.4)*g[0]-Math.sin(1.4)*g[1],f[1]+Math.sin(1.4)*g[0]+Math.cos(1.4)*g[1]],f)}}function arc(l,g,f,k){var j,h;if(k!=null){j=doc.getElementById(k)}if(f==null){h=[g[0]-l[0],g[1]-l[1]];f=Math.sqrt(h[0]*h[0]+h[1]*h[1])}if(j==null){j=myCreateElementSVG("path");j.setAttribute("id",k);svgpicture.appendChild(j)}j.setAttribute("d","M"+(l[0]*xunitlength+origin[0])+","+(height-l[1]*yunitlength-origin[1])+" A"+f*xunitlength+","+f*yunitlength+" 0 0,0 "+(g[0]*xunitlength+origin[0])+","+(height-g[1]*yunitlength-origin[1]));j.setAttribute("stroke-width",strokewidth);j.setAttribute("stroke",stroke);j.setAttribute("fill",fill);j.setAttribute("stroke-opacity",strokeopacity);j.setAttribute("fill-opacity",fillopacity);if(marker=="arrow"||marker=="arrowdot"){u=[(g[1]-l[1])/4,(l[0]-g[0])/4];h=[(g[0]-l[0])/2,(g[1]-l[1])/2];h=[l[0]+h[0]+u[0],l[1]+h[1]+u[1]]}else{h=[l[0],l[1]]}if(marker=="dot"||marker=="arrowdot"){ASdot(l,markersize,markerstroke,markerfill);if(marker=="arrowdot"){arrowhead(h,g)}ASdot(g,markersize,markerstroke,markerfill)}else{if(marker=="arrow"){arrowhead(h,g)}}}function sector(f,l,g,k){var j=l[0]-f[0],h=l[1]-f[1];arc(l,g,Math.sqrt(j*j+h*h),k+"arc");path([g,f,l],k+"path")}function ellipse(f,j,h,k){var g;if(k!=null){g=doc.getElementById(k)}if(g==null){g=myCreateElementSVG("ellipse");g.setAttribute("id",k);svgpicture.appendChild(g)}g.setAttribute("cx",f[0]*xunitlength+origin[0]);g.setAttribute("cy",height-f[1]*yunitlength-origin[1]);g.setAttribute("rx",j*xunitlength);g.setAttribute("ry",h*yunitlength);g.setAttribute("stroke-width",strokewidth);g.setAttribute("stroke",stroke);g.setAttribute("fill",fill);g.setAttribute("stroke-opacity",strokeopacity);g.setAttribute("fill-opacity",fillopacity)}function triangle(h,g,f,j){path([h,g,f,h],j)}function rect(k,h,l,j,g){var f;if(l!=null){f=doc.getElementById(l)}if(f==null){f=myCreateElementSVG("rect");f.setAttribute("id",l);svgpicture.appendChild(f)}f.setAttribute("x",k[0]*xunitlength+origin[0]);f.setAttribute("y",height-h[1]*yunitlength-origin[1]);f.setAttribute("width",(h[0]-k[0])*xunitlength);f.setAttribute("height",(h[1]-k[1])*yunitlength);if(j!=null){f.setAttribute("rx",j*xunitlength)}if(g!=null){f.setAttribute("ry",g*yunitlength)}f.setAttribute("stroke-width",strokewidth);f.setAttribute("stroke",stroke);f.setAttribute("fill",fill);f.setAttribute("stroke-opacity",strokeopacity);f.setAttribute("fill-opacity",fillopacity)}function text(g,q,l,f,m){var k,j,r=0,o=fontsize/3;if(/(`|\$)/.test(q)){k=document.getElementById(svgpicture.getAttribute("name")+"mml");if(k!=null){if(f!=null){j=document.getElementById(f)}if(j==null){j=myCreateElementXHTML("div");j.setAttribute("id",f);j.style.position="absolute";k.appendChild(j)}while(j.childNodes.length>0){j.removeChild(j.lastChild)}j.appendChild(document.createTextNode(q));j.style.left=""+(g[0]*xunitlength+origin[0])+"px";j.style.top=""+(height-g[1]*yunitlength-origin[1])+"px";if(/`/.test(q)){AMprocessNode(j)}else{LMprocessNode(j)}r=-j.offsetWidth/2;o=-j.offsetHeight/2;if(l!=null){if(/above/.test(l)){o=-j.offsetHeight}if(/below/.test(l)){o=0}if(/right/.test(l)){r=0}if(/left/.test(l)){r=-j.offsetWidth}}j.style.left=""+(g[0]*xunitlength+origin[0]+r)+"px";j.style.top=""+(height-g[1]*yunitlength-origin[1]+o)+"px"}return g}var h="middle";if(l!=null){if(/above/.test(l)){o=-fontsize/2}if(/below/.test(l)){o=fontsize-0}if(/right/.test(l)){h="start";r=fontsize/4}if(/left/.test(l)){h="end";r=-fontsize/4}}if(f!=null){j=doc.getElementById(f)}if(j==null){j=myCreateElementSVG("text");j.setAttribute("id",f);svgpicture.appendChild(j);j.appendChild(doc.createTextNode(q))}while(j.childNodes.length>1){j.removeChild(j.lastChild)}j.lastChild.nodeValue="\xA0"+q+"\xA0";j.setAttribute("x",g[0]*xunitlength+origin[0]+r);j.setAttribute("y",height-g[1]*yunitlength-origin[1]+o);j.setAttribute("font-style",(m!=null?m:(q.search(/^[a-zA-Z]$/)!=-1?"italic":fontstyle)));j.setAttribute("font-family",fontfamily);j.setAttribute("font-size",fontsize);j.setAttribute("font-weight",fontweight);j.setAttribute("text-anchor",h);if(fontstroke!="none"){j.setAttribute("stroke",fontstroke)}if(fontfill!="none"){j.setAttribute("fill",fontfill)}return g}function mtext(l,h,o,m){var j="middle";var g=0;var f=fontsize/3;if(o!=null){if(o.slice(0,5)=="above"){f=-fontsize/2}if(o.slice(0,5)=="below"){f=fontsize-0}if(o.slice(0,5)=="right"||o.slice(5,10)=="right"){j="start";g=fontsize/2}if(o.slice(0,4)=="left"||o.slice(5,9)=="left"){j="end";g=-fontsize/2}}var k=this;if(this.nodeName=="svg"){k=myCreateElementSVG("text");this.appendChild(k);k.appendChild(doc.createTextNode(h))}k.lastChild.nodeValue=h;k.setAttribute("x",l[0]+g);k.setAttribute("y",l[1]+f);k.setAttribute("font-style",(m!=null?m:fontstyle));k.setAttribute("font-family",fontfamily);k.setAttribute("font-size",fontsize);k.setAttribute("font-weight",fontweight);k.setAttribute("text-anchor",j);if(fontstroke!="none"){k.setAttribute("stroke",fontstroke)}if(fontfill!="none"){k.setAttribute("fill",fontfill)}}function image(g,l,f,j,m){var k;if(m!=null){k=doc.getElementById(m)}if(k==null){k=myCreateElementSVG("image");k.setAttribute("id",m);svgpicture.appendChild(k)}k.setAttribute("x",l[0]*xunitlength+origin[0]);k.setAttribute("y",height-l[1]*yunitlength-origin[1]);k.setAttribute("width",f);k.setAttribute("height",j);k.setAttribute("xlink:href",g)}function ASdot(h,g,j,l){if(j==null){j=stroke}if(l==null){l=fill}var k=myCreateElementSVG("circle");k.setAttribute("cx",h[0]*xunitlength+origin[0]);k.setAttribute("cy",height-h[1]*yunitlength-origin[1]);k.setAttribute("r",g);k.setAttribute("stroke-width",strokewidth);k.setAttribute("stroke",j);k.setAttribute("fill",l);svgpicture.appendChild(k)}function dot(g,k,h,o,m){var j;var f=g[0]*xunitlength+origin[0];var l=height-g[1]*yunitlength-origin[1];if(m!=null){j=doc.getElementById(m)}if(k=="+"||k=="-"||k=="|"){if(j==null){j=myCreateElementSVG("path");j.setAttribute("id",m);svgpicture.appendChild(j)}if(k=="+"){j.setAttribute("d"," M "+(f-ticklength)+" "+l+" L "+(f+ticklength)+" "+l+" M "+f+" "+(l-ticklength)+" L "+f+" "+(l+ticklength));j.setAttribute("stroke-width",0.5);j.setAttribute("stroke",axesstroke)}else{if(k=="-"){j.setAttribute("d"," M "+(f-ticklength)+" "+l+" L "+(f+ticklength)+" "+l)}else{j.setAttribute("d"," M "+f+" "+(l-ticklength)+" L "+f+" "+(l+ticklength))}j.setAttribute("stroke-width",strokewidth);j.setAttribute("stroke",stroke)}}else{if(j==null){j=myCreateElementSVG("circle");j.setAttribute("id",m);svgpicture.appendChild(j)}j.setAttribute("cx",f);j.setAttribute("cy",l);j.setAttribute("r",dotradius);j.setAttribute("stroke-width",strokewidth);j.setAttribute("stroke",stroke);j.setAttribute("fill",(k=="open"?"white":(k=="closed"?stroke:markerfill)))}if(h!=null){text(g,h,(o==null?"below":o),(m==null?m:m+"label"))}}point=dot;function arrowhead(m,l){var f;var h=[m[0]*xunitlength+origin[0],height-m[1]*yunitlength-origin[1]];var g=[l[0]*xunitlength+origin[0],height-l[1]*yunitlength-origin[1]];var j=[g[0]-h[0],g[1]-h[1]];var o=Math.sqrt(j[0]*j[0]+j[1]*j[1]);if(o>1e-8){j=[j[0]/o,j[1]/o];f=[-j[1],j[0]];var k=myCreateElementSVG("path");k.setAttribute("d","M "+(g[0]-15*j[0]-4*f[0])+" "+(g[1]-15*j[1]-4*f[1])+" L "+(g[0]-3*j[0])+" "+(g[1]-3*j[1])+" L "+(g[0]-15*j[0]+4*f[0])+" "+(g[1]-15*j[1]+4*f[1])+" z");k.setAttribute("stroke-width",markerstrokewidth);k.setAttribute("stroke",stroke);k.setAttribute("fill",stroke);k.setAttribute("stroke-opacity",strokeopacity);k.setAttribute("fill-opacity",fillopacity);svgpicture.appendChild(k)}}function chopZ(g){var f=g.indexOf(".");if(f==-1){return g}for(var h=g.length-1;h>f&&g.charAt(h)=="0";h--){}if(h==f){h--}return g.slice(0,h+1)}function grid(g,f){axes(g,f,null,g,f)}function noaxes(){if(!initialized){initPicture()}}function axes(dx,dy,labels,gdx,gdy){var x,y,ldx,ldy,lx,ly,lxp,lyp,pnode,st;if(!initialized){initPicture()}if(typeof dx=="string"){labels=dx;dx=null}if(typeof dy=="string"){gdx=dy;dy=null}if(xscl!=null){dx=xscl;gdx=xscl;labels=dx}if(yscl!=null){dy=yscl;gdy=yscl}if(xtick!=null){dx=xtick}if(ytick!=null){dy=ytick}dx=(dx==null?xunitlength:dx*xunitlength);dy=(dy==null?dx:dy*yunitlength);fontsize=Math.min(dx/2,dy/2,16);ticklength=fontsize/4;if(xgrid!=null){gdx=xgrid}if(ygrid!=null){gdy=ygrid}if(gdx!=null){gdx=(typeof gdx=="string"?dx:gdx*xunitlength);gdy=(gdy==null?dy:gdy*yunitlength);pnode=myCreateElementSVG("path");st="";for(x=origin[0];x<width;x=x+gdx){st+=" M"+x+",0 "+x+","+height}for(x=origin[0]-gdx;x>0;x=x-gdx){st+=" M"+x+",0 "+x+","+height}for(y=height-origin[1];y<height;y=y+gdy){st+=" M0,"+y+" "+width+","+y}for(y=height-origin[1]-gdy;y>0;y=y-gdy){st+=" M0,"+y+" "+width+","+y}pnode.setAttribute("d",st);pnode.setAttribute("stroke-width",0.5);pnode.setAttribute("stroke",gridstroke);pnode.setAttribute("fill",fill);svgpicture.appendChild(pnode)}pnode=myCreateElementSVG("path");st="M0,"+(height-origin[1])+" "+width+","+(height-origin[1])+" M"+origin[0]+",0 "+origin[0]+","+height;for(x=origin[0]+dx;x<width;x=x+dx){st+=" M"+x+","+(height-origin[1]+ticklength)+" "+x+","+(height-origin[1]-ticklength)}for(x=origin[0]-dx;x>0;x=x-dx){st+=" M"+x+","+(height-origin[1]+ticklength)+" "+x+","+(height-origin[1]-ticklength)}for(y=height-origin[1]+dy;y<height;y=y+dy){st+=" M"+(origin[0]+ticklength)+","+y+" "+(origin[0]-ticklength)+","+y}for(y=height-origin[1]-dy;y>0;y=y-dy){st+=" M"+(origin[0]+ticklength)+","+y+" "+(origin[0]-ticklength)+","+y}if(labels!=null){with(Math){ldx=dx/xunitlength;ldy=dy/yunitlength;lx=(xmin>0||xmax<0?xmin:0);ly=(ymin>0||ymax<0?ymin:0);lxp=(ly==0?"below":"above");lyp=(lx==0?"left":"right");var ddx=floor(1.1-log(ldx)/log(10))+1;var ddy=floor(1.1-log(ldy)/log(10))+1;for(x=ldx;x<=xmax;x=x+ldx){text([x,ly],chopZ(x.toFixed(ddx)),lxp)}for(x=-ldx;xmin<=x;x=x-ldx){text([x,ly],chopZ(x.toFixed(ddx)),lxp)}for(y=ldy;y<=ymax;y=y+ldy){text([lx,y],chopZ(y.toFixed(ddy)),lyp)}for(y=-ldy;ymin<=y;y=y-ldy){text([lx,y],chopZ(y.toFixed(ddy)),lyp)}}}fontsize=defaultfontsize;pnode.setAttribute("d",st);pnode.setAttribute("stroke-width",0.5);pnode.setAttribute("stroke",axesstroke);pnode.setAttribute("fill",fill);pnode.setAttribute("stroke-opacity",strokeopacity);pnode.setAttribute("fill-opacity",fillopacity);svgpicture.appendChild(pnode)}function mathjs(h){h=h.replace(/\s/g,"");if(h.indexOf("^-1")!=-1){h=h.replace(/sin\^-1/g,"arcsin");h=h.replace(/cos\^-1/g,"arccos");h=h.replace(/tan\^-1/g,"arctan");h=h.replace(/sec\^-1/g,"arcsec");h=h.replace(/csc\^-1/g,"arccsc");h=h.replace(/cot\^-1/g,"arccot");h=h.replace(/sinh\^-1/g,"arcsinh");h=h.replace(/cosh\^-1/g,"arccosh");h=h.replace(/tanh\^-1/g,"arctanh");h=h.replace(/sech\^-1/g,"arcsech");h=h.replace(/csch\^-1/g,"arccsch");h=h.replace(/coth\^-1/g,"arccoth")}h=h.replace(/^e$/g,"(Math.E)");h=h.replace(/^e([^a-zA-Z])/g,"(Math.E)$1");h=h.replace(/([^a-zA-Z])e/g,"$1(Math.E)");h=h.replace(/([0-9])([\(a-zA-Z])/g,"$1*$2");h=h.replace(/\)([\(0-9a-zA-Z])/g,")*$1");var l,g,f,m,o;while((l=h.indexOf("^"))!=-1){if(l==0){return"Error: missing argument"}g=l-1;m=h.charAt(g);if(m>="0"&&m<="9"){g--;while(g>=0&&(m=h.charAt(g))>="0"&&m<="9"){g--}if(m=="."){g--;while(g>=0&&(m=h.charAt(g))>="0"&&m<="9"){g--}}}else{if(m==")"){o=1;g--;while(g>=0&&o>0){m=h.charAt(g);if(m=="("){o--}else{if(m==")"){o++}}g--}while(g>=0&&(m=h.charAt(g))>="a"&&m<="z"||m>="A"&&m<="Z"){g--}}else{if(m>="a"&&m<="z"||m>="A"&&m<="Z"){g--;while(g>=0&&(m=h.charAt(g))>="a"&&m<="z"||m>="A"&&m<="Z"){g--}}else{return"Error: incorrect syntax in "+h+" at position "+g}}}if(l==h.length-1){return"Error: missing argument"}f=l+1;m=h.charAt(f);if(m>="0"&&m<="9"||m=="-"){f++;while(f<h.length&&(m=h.charAt(f))>="0"&&m<="9"){f++}if(m=="."){f++;while(f<h.length&&(m=h.charAt(f))>="0"&&m<="9"){f++}}}else{if(m=="("){o=1;f++;while(f<h.length&&o>0){m=h.charAt(f);if(m=="("){o++}else{if(m==")"){o--}}f++}}else{if(m>="a"&&m<="z"||m>="A"&&m<="Z"){f++;while(f<h.length&&(m=h.charAt(f))>="a"&&m<="z"||m>="A"&&m<="Z"){f++}}else{return"Error: incorrect syntax in "+h+" at position "+f}}}h=h.slice(0,g+1)+"Math.pow("+h.slice(g+1,l)+","+h.slice(l+1,f)+")"+h.slice(f)}while((l=h.indexOf("!"))!=-1){if(l==0){return"Error: missing argument"}g=l-1;m=h.charAt(g);if(m>="0"&&m<="9"){g--;while(g>=0&&(m=h.charAt(g))>="0"&&m<="9"){g--}if(m=="."){g--;while(g>=0&&(m=h.charAt(g))>="0"&&m<="9"){g--}}}else{if(m==")"){o=1;g--;while(g>=0&&o>0){m=h.charAt(g);if(m=="("){o--}else{if(m==")"){o++}}g--}while(g>=0&&(m=h.charAt(g))>="a"&&m<="z"||m>="A"&&m<="Z"){g--}}else{if(m>="a"&&m<="z"||m>="A"&&m<="Z"){g--;while(g>=0&&(m=h.charAt(g))>="a"&&m<="z"||m>="A"&&m<="Z"){g--}}else{return"Error: incorrect syntax in "+h+" at position "+g}}}h=h.slice(0,g+1)+"factorial("+h.slice(g+1,l)+")"+h.slice(l+1)}return h}function plot(fun,x_min,x_max,points,id,endpts){var pth=[];var f=function(x){return x},g=fun;var name=null;if(typeof fun=="string"){eval("g = function(x){ with(Math) return "+mathjs(fun)+" }")}else{if(typeof fun=="object"){eval("f = function(t){ with(Math) return "+mathjs(fun[0])+" }");eval("g 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displayCoord(g){if(showcoordinates){var j=g.target.parentNode;var f=j.childNodes;for(var h=0;h<f.length&&f.item(h).nodeName!="text";h++){}var k=f.item(h);k.mtext=mtext;k.mtext([j.getAttribute("width")-0,j.getAttribute("height")-0],"("+getX(g).toFixed(2)+", "+getY(g).toFixed(2)+")","aboveleft","")}}function removeCoord(g){var j=g.target.parentNode;var f=j.childNodes;for(var h=0;h<f.length&&f.item(h).nodeName!="text";h++){}var k=f.item(h);k.mtext=mtext;k.mtext([j.getAttribute("width")-0,j.getAttribute("height")-0],"","aboveleft","")}function initASCIIMathCalculators(li){var i;for(i=0;i<li.length;i++){li[i].innerHTML=calcstr;AMprocessNode(li[i])}li=document.getElementsByTagName("textarea");var st;for(i=0;i<li.length;i++){st=li[i].getAttribute("onkeyup");if(st!=null){eval(String(st).replace(/function anonymous\(\)/,""))}}}function calculate(inputId,outputId){var str=document.getElementById(inputId).value;var err="";var ind=str.lastIndexOf("\n");if(ind==str.length-1){str=str.slice(0,ind)}str=str.slice(str.lastIndexOf("\n")+1);try{var res=eval(mathjs(str))}catch(e){err="syntax incomplete"}if(!isNaN(res)&&res!="Infinity"){str="`"+str+" =` "+(Math.abs(res-Math.round(res*1000000)/1000000)<1e-15?Math.round(res*1000000)/1000000:res)+err}else{if(str!=""){str="`"+str+"` = undefined"}}var outnode=document.getElementById(outputId);var n=outnode.childNodes.length;for(var i=0;i<n;i++){outnode.removeChild(outnode.firstChild)}outnode.appendChild(document.createTextNode(str));AMprocessNode(outnode)}function append(f){document.getElementById("in").value+=f;calculate("in","out");document.getElementById("in").scrollTop=1000;document.getElementById("in").focus()}function clearTextArea(){document.getElementById("in").value="";calculate("in","out");document.getElementById("in").focus()}var calcstr='<table align="center">\n<tr><th>\nASCIIMath Scientific Calculator\n</th></tr>\n<tr><td>\nClick in the box to use your keyboard or use the buttons\n</td></tr>\n<tr><td>\n<textarea id="in" rows="3" cols="40" onkeyup="calculate(\'in\',\'out\')"></textarea></td></tr>\n<tr><td height="50">Result: &nbsp; &nbsp; <span id="out"></span></td></tr>\n</table>\n<table align="center" cellspacing="0" cellpadding="0">\n<tbody align="center">\n<tr>\n<td colspan="4">\n<button onclick="append(\'sin^-1(\')"><font size=2>`sin^-1`</font></button><button onclick="append(\'cos^-1(\')"><font size=2>`cos^-1`</font></button><button onclick="append(\'tan^-1(\')"><font size=2>`tan^-1`</font></button></td>\n<td><button onclick="clearTextArea()">&nbsp;`C`&nbsp;</button></td>\n\n</tr>\n<tr>\n<td><button onclick="append(\'pi\')">&nbsp;`pi` &nbsp;</button></td>\n<td><button onclick="append(\'sin(\')">&nbsp;`sin`</button></td>\n<td><button onclick="append(\'cos(\')">&nbsp;`cos`</button></td>\n<td><button onclick="append(\'tan(\')">&nbsp;`tan`</button></td>\n<td><button onclick="append(\'^\')">`x^y`</button></td>\n</tr>\n<tr>\n<td><button onclick="append(\'!\')">&nbsp; `!` &nbsp;</button></td>\n\n<td><button onclick="append(\'(\')"><font size=2>&nbsp;&nbsp;`(`&nbsp;&nbsp;</font></button></td>\n<td><button onclick="append(\')\')"><font size=2>&nbsp;&nbsp;`)`&nbsp;&nbsp;</font></button></td>\n<td><button onclick="append(\'sqrt(\')"><font size=2>`sqrt({::}^ )`</font></button></td>\n<td><button onclick="append(\'/\')">&nbsp;`-: `</button></td>\n</tr>\n<tr>\n<td><button onclick="append(\'log(\')">`log`</button></td>\n<td><button onclick="append(\'7\')">&nbsp; `7` &nbsp;</button></td>\n<td><button onclick="append(\'8\')">&nbsp; `8` &nbsp;</button></td>\n\n<td><button onclick="append(\'9\')">&nbsp; `9` &nbsp;</button></td>\n<td><button onclick="append(\'*\')">&nbsp;`times`&nbsp;</button></td>\n</tr>\n<tr>\n<td><button onclick="append(\'ln(\')">&nbsp;`ln`&nbsp;</button></td>\n<td><button onclick="append(\'4\')">&nbsp; `4` &nbsp;</button></td>\n<td><button onclick="append(\'5\')">&nbsp; `5` &nbsp;</button></td>\n<td><button onclick="append(\'6\')">&nbsp; `6` &nbsp;</button></td>\n\n<td><button onclick="append(\'-\')">&nbsp;`-{::}`&nbsp;</button></td>\n</tr>\n<tr>\n<td><button onclick="append(\'e\')">&nbsp; `e` &nbsp;</button></td>\n<td><button onclick="append(\'1\')">&nbsp;&nbsp;`1` &nbsp;</button></td>\n<td><button onclick="append(\'2\')">&nbsp; `2` &nbsp;</button></td>\n<td><button onclick="append(\'3\')">&nbsp; `3` &nbsp;</button></td>\n<td><button onclick="append(\'+\')">&nbsp;`+{::}`&nbsp;</button></td>\n\n</tr>\n<tr>\n<td> <!--button onclick="append(\'pi\')">&nbsp;`pi` &nbsp;</button--></td>\n<td><button onclick="append(\'0\')">&nbsp; `0` &nbsp;</button></td>\n<td><button onclick="append(\'.\')">&nbsp; `.` &nbsp;</button></td>\n<td><button onclick="append(\'\\n\')">&nbsp;`"ent"`</button></td>\n</tr>\n</tbody>\n</table>';function generic(){if(translateOnLoad){var g=document.getElementById("processasciimathinmoodle");if(g!=null){dsvglocation=g.className}if(g!=null||!checkforprocessasciimathinmoodle){if(translateLaTeX){LMtranslate()}if(translateASCIIMath){translate()}if(translateASCIIsvg){drawPictures()}}var f=getElementsByClass(document,"div","ASCIIMathCalculator");if(f.length>0){initASCIIMathCalculators(f)}}}if(typeof window.addEventListener!="undefined"){window.addEventListener("load",generic,false)}else{if(typeof document.addEventListener!="undefined"){document.addEventListener("load",generic,false)}else{if(typeof window.attachEvent!="undefined"){window.attachEvent("onload",generic)}else{if(typeof window.onload=="function"){var existing=onload;window.onload=function(){existing();generic()}}else{window.onload=generic}}}};
\ No newline at end of file
diff -r ce92c17cadc5 -r 5ff35e8e16e2 src/cm/media/js/lib/asciimathtml/d.svg
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cm/media/js/lib/asciimathtml/d.svg	Mon Jan 23 11:14:44 2012 +0100
@@ -0,0 +1,8 @@
+<?xml version="1.0" standalone="no"?>
+<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN" 
+  "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">
+<svg id="root" xml:space="preserve" width="100%" height="100%" 
+  preserveAspectRatio="xMidYMid meet"
+  xmlns="http://www.w3.org/2000/svg"
+  xmlns:xlink="http:///www.w3.org/1999/xlink">
+</svg>
diff -r ce92c17cadc5 -r 5ff35e8e16e2 src/cm/templates/site/text_view_comments.html
--- a/src/cm/templates/site/text_view_comments.html	Mon Jan 16 17:33:45 2012 +0100
+++ b/src/cm/templates/site/text_view_comments.html	Mon Jan 23 11:14:44 2012 +0100
@@ -7,6 +7,7 @@
     {% include "site/layout/req_yui.html" %}
     
 <link rel="stylesheet" type="text/css" href="{{ CM_MEDIA_PREFIX }}css/site/text_view_comments/text_view_comments.css">
+<script type="text/javascript" src="{{ CM_MEDIA_PREFIX }}js/lib/asciimathtml/ASCIIMathML.min.js"></script>
 </head>
 
 <body>
@@ -112,4 +113,4 @@
 
 
 
-</html>
\ No newline at end of file
+</html>