// ===================================================================

// Author: Matt Kruse <matt@mattkruse.com>

// WWW: http://www.mattkruse.com/

//

// NOTICE: You may use this code for any purpose, commercial or

// private, without any further permission from the author. You may

// remove this notice from your final code if you wish, however it is

// appreciated by the author if at least my web site address is kept.

//

// You may *NOT* re-distribute this code in any way except through its

// use. That means, you can include it in your product, or your web

// site, or any other form where the code is actually being used. You

// may not put the plain javascript up on your site for download or

// include it in your javascript libraries for download. 

// If you wish to share this code with others, please just point them

// to the URL instead.

// Please DO NOT link directly to my .js files from your site. Copy

// the files to your server and use them there. Thank you.

// ===================================================================

/* SOURCE FILE: AnchorPosition.js */

/* 

AnchorPosition.js

Author: Matt Kruse

Last modified: 10/11/02

DESCRIPTION: These functions find the position of an <A> tag in a document,

so other elements can be positioned relative to it.

COMPATABILITY: Netscape 4.x,6.x,Mozilla, IE 5.x,6.x on Windows. Some small

positioning errors - usually with Window positioning - occur on the 

Macintosh platform.

FUNCTIONS:

getAnchorPosition(anchorname)

  Returns an Object() having .x and .y properties of the pixel coordinates

  of the upper-left corner of the anchor. Position is relative to the PAGE.

getAnchorWindowPosition(anchorname)

  Returns an Object() having .x and .y properties of the pixel coordinates

  of the upper-left corner of the anchor, relative to the WHOLE SCREEN.

NOTES:

1) For popping up separate browser windows, use getAnchorWindowPosition. 

   Otherwise, use getAnchorPosition

2) Your anchor tag MUST contain both NAME and ID attributes which are the 

   same. For example:

   <A NAME="test" ID="test"> </A>

3) There must be at least a space between <A> </A> for IE5.5 to see the 

   anchor tag correctly. Do not do <A></A> with no space.

*/ 

// getAnchorPosition(anchorname)

//   This function returns an object having .x and .y properties which are the coordinates

//   of the named anchor, relative to the page.

function getAnchorPosition(anchorname) {

	// This function will return an Object with x and y properties

	var useWindow=false;

	var coordinates=new Object();

	var x=0,y=0;

	// Browser capability sniffing

	var use_gebi=false, use_css=false, use_layers=false;

	if (document.getElementById) { use_gebi=true; }

	else if (document.all) { use_css=true; }

	else if (document.layers) { use_layers=true; }

	// Logic to find position

 	if (use_gebi && document.all) {

		x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);

		y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);

		}

	else if (use_gebi) {

		var o=document.getElementById(anchorname);

		x=AnchorPosition_getPageOffsetLeft(o);

		y=AnchorPosition_getPageOffsetTop(o);

		}

 	else if (use_css) {

		x=AnchorPosition_getPageOffsetLeft(document.all[anchorname]);

		y=AnchorPosition_getPageOffsetTop(document.all[anchorname]);

		}

	else if (use_layers) {

		var found=0;

		for (var i=0; i<document.anchors.length; i++) {

			if (document.anchors[i].name==anchorname) { found=1; break; }

			}

		if (found==0) {

			coordinates.x=0; coordinates.y=0; return coordinates;

			}

		x=document.anchors[i].x;

		y=document.anchors[i].y;

		}

	else {

		coordinates.x=0; coordinates.y=0; return coordinates;

		}

	coordinates.x=x;

	coordinates.y=y;

	return coordinates;

	}

// getAnchorWindowPosition(anchorname)

//   This function returns an object having .x and .y properties which are the coordinates

//   of the named anchor, relative to the window

function getAnchorWindowPosition(anchorname) {

	var coordinates=getAnchorPosition(anchorname);

	var x=0;

	var y=0;

	if (document.getElementById) {

		if (isNaN(window.screenX)) {

			x=coordinates.x-document.body.scrollLeft+window.screenLeft;

			y=coordinates.y-document.body.scrollTop+window.screenTop;

			}

		else {

			x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;

			y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;

			}

		}

	else if (document.all) {

		x=coordinates.x-document.body.scrollLeft+window.screenLeft;

		y=coordinates.y-document.body.scrollTop+window.screenTop;

		}

	else if (document.layers) {

		x=coordinates.x+window.screenX+(window.outerWidth-window.innerWidth)-window.pageXOffset;

		y=coordinates.y+window.screenY+(window.outerHeight-24-window.innerHeight)-window.pageYOffset;

		}

	coordinates.x=x;

	coordinates.y=y;

	return coordinates;

	}

// Functions for IE to get position of an object

function AnchorPosition_getPageOffsetLeft (el) {

	var ol=el.offsetLeft;

	while ((el=el.offsetParent) != null) { ol += el.offsetLeft; }

	return ol;

	}

function AnchorPosition_getWindowOffsetLeft (el) {

	return AnchorPosition_getPageOffsetLeft(el)-document.body.scrollLeft;

	}	

function AnchorPosition_getPageOffsetTop (el) {

	var ot=el.offsetTop;

	while((el=el.offsetParent) != null) { ot += el.offsetTop; }

	return ot;

	}

function AnchorPosition_getWindowOffsetTop (el) {

	return AnchorPosition_getPageOffsetTop(el)-document.body.scrollTop;

	}

/* SOURCE FILE: date.js */

// HISTORY

// ------------------------------------------------------------------

// May 17, 2003: Fixed bug in parseDate() for dates <1970

// March 11, 2003: Added parseDate() function

// March 11, 2003: Added "NNN" formatting option. Doesn't match up

//                 perfectly with SimpleDateFormat formats, but 

//                 backwards-compatability was required.

// ------------------------------------------------------------------

// These functions use the same 'format' strings as the 

// java.text.SimpleDateFormat class, with minor exceptions.

// The format string consists of the following abbreviations:

// 

// Field        | Full Form          | Short Form

// -------------+--------------------+-----------------------

// Year         | yyyy (4 digits)    | yy (2 digits), y (2 or 4 digits)

// Month        | MMM (name or abbr.)| MM (2 digits), M (1 or 2 digits)

//              | NNN (abbr.)        |

// Day of Month | dd (2 digits)      | d (1 or 2 digits)

// Day of Week  | EE (name)          | E (abbr)

// Hour (1-12)  | hh (2 digits)      | h (1 or 2 digits)

// Hour (0-23)  | HH (2 digits)      | H (1 or 2 digits)

// Hour (0-11)  | KK (2 digits)      | K (1 or 2 digits)

// Hour (1-24)  | kk (2 digits)      | k (1 or 2 digits)

// Minute       | mm (2 digits)      | m (1 or 2 digits)

// Second       | ss (2 digits)      | s (1 or 2 digits)

// AM/PM        | a                  |

//

// NOTE THE DIFFERENCE BETWEEN MM and mm! Month=MM, not mm!

// Examples:

//  "MMM d, y" matches: January 01, 2000

//                      Dec 1, 1900

//                      Nov 20, 00

//  "M/d/yy"   matches: 01/20/00

//                      9/2/00

//  "MMM dd, yyyy hh:mm:ssa" matches: "January 01, 2000 12:30:45AM"

// ------------------------------------------------------------------

var MONTH_NAMES=new Array('January','February','March','April','May','June','July','August','September','October','November','December','Jan','Feb','Mar','Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec');

var DAY_NAMES=new Array('Sunday','Monday','Tuesday','Wednesday','Thursday','Friday','Saturday','Sun','Mon','Tue','Wed','Thu','Fri','Sat');

function LZ(x) {return(x<0||x>9?"":"0")+x}

// ------------------------------------------------------------------

// isDate ( date_string, format_string )

// Returns true if date string matches format of format string and

// is a valid date. Else returns false.

// It is recommended that you trim whitespace around the value before

// passing it to this function, as whitespace is NOT ignored!

// ------------------------------------------------------------------

function isDate(val,format) {

	var date=getDateFromFormat(val,format);

	if (date==0) { return false; }

	return true;

	}

// -------------------------------------------------------------------

// compareDates(date1,date1format,date2,date2format)

//   Compare two date strings to see which is greater.

//   Returns:

//   1 if date1 is greater than date2

//   0 if date2 is greater than date1 of if they are the same

//  -1 if either of the dates is in an invalid format

// -------------------------------------------------------------------

function compareDates(date1,dateformat1,date2,dateformat2) {

	var d1=getDateFromFormat(date1,dateformat1);

	var d2=getDateFromFormat(date2,dateformat2);

	if (d1==0 || d2==0) {

		return -1;

		}

	else if (d1 > d2) {

		return 1;

		}

	return 0;

	}

// ------------------------------------------------------------------

// formatDate (date_object, format)

// Returns a date in the output format specified.

// The format string uses the same abbreviations as in getDateFromFormat()

// ------------------------------------------------------------------

function formatDate(date,format) {

	format=format+"";

	var result="";

	var i_format=0;

	var c="";

	var token="";

	var y=date.getYear()+"";

	var M=date.getMonth()+1;

	var d=date.getDate();

	var E=date.getDay();

	var H=date.getHours();

	var m=date.getMinutes();

	var s=date.getSeconds();

	var yyyy,yy,MMM,MM,dd,hh,h,mm,ss,ampm,HH,H,KK,K,kk,k;

	// Convert real date parts into formatted versions

	var value=new Object();

	if (y.length < 4) {y=""+(y-0+1900);}

	value["y"]=""+y;

	value["yyyy"]=y;

	value["yy"]=y.substring(2,4);

	value["M"]=M;

	value["MM"]=LZ(M);

	value["MMM"]=MONTH_NAMES[M-1];

	value["NNN"]=MONTH_NAMES[M+11];

	value["d"]=d;

	value["dd"]=LZ(d);

	value["E"]=DAY_NAMES[E+7];

	value["EE"]=DAY_NAMES[E];

	value["H"]=H;

	value["HH"]=LZ(H);

	if (H==0){value["h"]=12;}

	else if (H>12){value["h"]=H-12;}

	else {value["h"]=H;}

	value["hh"]=LZ(value["h"]);

	if (H>11){value["K"]=H-12;} else {value["K"]=H;}

	value["k"]=H+1;

	value["KK"]=LZ(value["K"]);

	value["kk"]=LZ(value["k"]);

	if (H > 11) { value["a"]="PM"; }

	else { value["a"]="AM"; }

	value["m"]=m;

	value["mm"]=LZ(m);

	value["s"]=s;

	value["ss"]=LZ(s);

	while (i_format < format.length) {

		c=format.charAt(i_format);

		token="";

		while ((format.charAt(i_format)==c) && (i_format < format.length)) {

			token += format.charAt(i_format++);

			}

		if (value[token] != null) { result=result + value[token]; }

		else { result=result + token; }

		}

	return result;

	}

// ------------------------------------------------------------------

// Utility functions for parsing in getDateFromFormat()

// ------------------------------------------------------------------

function _isInteger(val) {

	var digits="1234567890";

	for (var i=0; i < val.length; i++) {

		if (digits.indexOf(val.charAt(i))==-1) { return false; }

		}

	return true;

	}

function _getInt(str,i,minlength,maxlength) {

	for (var x=maxlength; x>=minlength; x--) {

		var token=str.substring(i,i+x);

		if (token.length < minlength) { return null; }

		if (_isInteger(token)) { return token; }

		}

	return null;

	}

// ------------------------------------------------------------------

// getDateFromFormat( date_string , format_string )

//

// This function takes a date string and a format string. It matches

// If the date string matches the format string, it returns the 

// getTime() of the date. If it does not match, it returns 0.

// ------------------------------------------------------------------

function getDateFromFormat(val,format) {

	val=val+"";

	format=format+"";

	var i_val=0;

	var i_format=0;

	var c="";

	var token="";

	var token2="";

	var x,y;

	var now=new Date();

	var year=now.getYear();

	var month=now.getMonth()+1;

	var date=1;

	var hh=now.getHours();

	var mm=now.getMinutes();

	var ss=now.getSeconds();

	var ampm="";

	while (i_format < format.length) {

		// Get next token from format string

		c=format.charAt(i_format);

		token="";

		while ((format.charAt(i_format)==c) && (i_format < format.length)) {

			token += format.charAt(i_format++);

			}

		// Extract contents of value based on format token

		if (token=="yyyy" || token=="yy" || token=="y") {

			if (token=="yyyy") { x=4;y=4; }

			if (token=="yy")   { x=2;y=2; }

			if (token=="y")    { x=2;y=4; }

			year=_getInt(val,i_val,x,y);

			if (year==null) { return 0; }

			i_val += year.length;

			if (year.length==2) {

				if (year > 70) { year=1900+(year-0); }

				else { year=2000+(year-0); }

				}

			}

		else if (token=="MMM"||token=="NNN"){

			month=0;

			for (var i=0; i<MONTH_NAMES.length; i++) {

				var month_name=MONTH_NAMES[i];

				if (val.substring(i_val,i_val+month_name.length).toLowerCase()==month_name.toLowerCase()) {

					if (token=="MMM"||(token=="NNN"&&i>11)) {

						month=i+1;

						if (month>12) { month -= 12; }