src/cm/media/js/lib/yui/yui_3.0.0b1/examples/node-menunav/node-menunav-6.html
author Yves-Marie Haussonne <ymh.work+github@gmail.com>
Fri, 09 May 2014 18:35:26 +0200
changeset 656 a84519031134
parent 0 40c8f766c9b8
permissions -rw-r--r--
add link to "privacy policy" in the header test
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
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<html>
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<head>
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	<title>YUI Library Examples: MenuNav Node Plugin: Left Nav With Submenus With Rounded Corners</title>
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    <meta http-equiv="content-type" content="text/html; charset=utf-8">
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    	<link rel="stylesheet" type="text/css" href="../../assets/yui.css" >
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<style>
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    /*Supplemental CSS for the YUI distribution*/
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    #custom-doc { width: 95%; min-width: 950px; }
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    #pagetitle {background-image: url(../../assets/bg_hd.gif);}
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/*    #pagetitle h1 {background-image: url(../../assets/title_h_bg.gif);}*/
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</style>
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<link rel="stylesheet" type="text/css" href="../../assets/dpSyntaxHighlighter.css">
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<!--there is no custom header content for this example-->
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<link type="text/css" rel="stylesheet" href="../../build/cssfonts/fonts-min.css" />
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<script type="text/javascript" src="../../build/yui/yui-min.js"></script>
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</head>
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<body id="yahoo-com" class=" yui-skin-sam">
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<div id="custom-doc" class="yui-t2">
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<div id="hd">
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	<div id="ygunav">
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		<p>
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            <em>
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                <a href="http://developer.yahoo.com/yui/3/">YUI 3.x Home</a> <i> - </i>	
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            </em>
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		</p>
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		<form action="http://search.yahoo.com/search" id="sitesearchform">
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            <input name="vs" type="hidden" value="developer.yahoo.com">
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            <input name="vs" type="hidden" value="yuiblog.com">
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		    <div id="sitesearch">
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		    	<label for="searchinput">Site Search (YDN &amp; YUIBlog): </label>
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			    <input type="text" id="searchinput" name="p">
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			    <input type="submit" value="Search" id="searchsubmit" class="ygbt">
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		    </div>
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		</form>
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    </div>
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	<div id="ygma"><a href="../../"><img src="../../assets/logo.gif"  border="0" width="200" height="93"></a></div>
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	<div id="pagetitle"><h1>YUI Library Examples: MenuNav Node Plugin: Left Nav With Submenus With Rounded Corners</h1></div>
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</div>
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<div id="bd">
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	<div id="bar-note"><p><strong>Note:</strong> This is YUI 3.x. Looking for <a href="http://developer.yahoo.com/yui/">YUI 2.x</a>?</p></div>
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	<div id="yui-main">
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		<div class="yui-b">
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		  <div class="yui-ge">
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			  <div class="yui-u first example" id="main">
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	<h2>MenuNav Node Plugin: Left Nav With Submenus With Rounded Corners</h2>
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	<div id="example" class="promo">
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	<p>
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	<p>
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This example demonstrates how to add rounded corners to submenus of a menu built using the 
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MenuNav Node Plugin.
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</p>
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	</p>	
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	<div class="module example-container  newWindow">
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			<div id="example-canvas" class="bd">
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		<p class="newWindowButton yui-skin-sam">
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        <span id="newWindowLink">
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            <span class="first-child">
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                <a href="node-menunav-6_source.html" target="_blank">View example in new window.</a>
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            </span>
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        </span>	
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    </p>
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		</div>
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	</div>			
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	</div>
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	<h3>Creating the Rounded Corner HTML</h3>
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<p>
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One way to add rounded corners to submenus is to append decorator elements to the node representing 
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a submenu's bounding box.  As the name implies, decorator elements add no semantic value to the 
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markup, but enable additional styles to be applied.  When adding any decorator elements to create 
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effects like shadows or rounded corners, always add those elements via JavaScript, since it is only 
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when JavaScript is enabled that a menu's markup is transformed in a drop-down menu system via the 
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MenuNav Node Plugin.
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</p>
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<p>
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Each rounded corner is created by applying a background image to a <code>&#60;div&#62;</code>.  
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A class name identifying the corner will be added to each <code>&#60;div&#62;</code>.
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The <code>&#60;div&#62;</code>s used to create the right corners will be nested inside the 
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<code>&#60;div&#62;</code>s used to create the left corners, and each <code>&#60;div&#62;</code>
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for the left corners will have an additional class name of <code>yui-menu-corner</code>.  The 
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template for each set of rounded corners comes together as follows:
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</p>
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<textarea name="code" class="HTML" cols="60" rows="1">
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<!-- top-left and top-right corners -->
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<div class="yui-menu-corner yui-menu-corner-tl"><div class="yui-menu-corner-tr"></div></div>
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<!-- bottom-left and bottom-right corners -->
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<div class="yui-menu-corner yui-menu-corner-bl"><div class="yui-menu-corner-br"></div></div>
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</textarea>
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<p>
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The <code>&#60;div&#62;</code>s for each corner is created by passing a string 
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of HTML to Node's <a href="../../api/Node.html#method_create"><code>create</code></a> method.  Use 
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the <a href="../../api/Node.html#method_queryAll"><code>queryAll</code></a> method to 
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retrieve Node instances for each submenu, and the 
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<a href="../../api/Node.html#method_appendChild"><code>appendChild</code></a> and 
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<a href="../../api/Node.html#method_insertBefore"><code>insertBefore</code></a>
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methods to add the rounded corners <code>&#60;div&#62;</code>s to the bounding box of each submenu.
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</p>
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<textarea name="code" class="JScript" cols="60" rows="1">
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//	Call the "use" method, passing in "node-menunav".  This will load the 
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//	script and CSS for the MenuNav Node Plugin and all of the required 
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//	dependencies.
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YUI({base:"../../build/", timeout: 10000}).use("node-menunav", function(Y) {
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	//	Retrieve the Node instance representing the root menu
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	//	(<div id="productsandservices">)
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	var menu = Y.Node.get("#productsandservices");
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	//	Use the "queryAll" method to retrieve the 
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	//	Node instances representing each submenu.
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	menu.queryAll(".yui-menu").each(function (node) {
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		//	Add decorator elements used to create the rounded corners to the 
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		//	bounding box of each submenu.
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		// Insert the first decorator before the submenu's content box
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		node.insertBefore(Y.Node.create('<div class="yui-menu-corner yui-menu-corner-tl"><div class="yui-menu-corner-tr"></div></div>'), node.get("children").item(0));
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		// Insert the second decorator after the submenu's content box
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		node.appendChild(Y.Node.create('<div class="yui-menu-corner yui-menu-corner-bl"><div class="yui-menu-corner-br"></div></div>'));
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	});
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	//	Call the "plug" method of the Node instance, passing in a reference to the
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	//	MenuNav Node Plugin.
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	menu.plug(Y.Plugin.NodeMenuNav);
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});
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</textarea>
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<em>Note:</em> In keeping with the 
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<a href="http://developer.yahoo.com/performance/">Exceptional Performance</a> 
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team's recommendation, the script block used to instantiate the menu will be 
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<a href="http://developer.yahoo.com/performance/rules.html#js_bottom">placed at the bottom of the page</a>.
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This not only improves performance, it helps ensure that the DOM subtree of the 
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element representing the root menu 
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(<code>&#60;div id="productsandservices"&#62;</code>) is ready to be scripted.
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</p>
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<h3>Create the Rounded Corner Background Image</h3>
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<p>
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For performance, each rounded corner <code>&#60;div&#62;</code> uses the same image as its 
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background image, but only reveals the relevant section of the image via the 
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<code>background-position</code> property.  The complete image is as follows:
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</p>
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<img src="assets//round.png" width="200" height="6" alt="Image used as the background image for the DIV elements used to create rounded corners">
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<h3>Styling the Rounded Corner HTML</h3>
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<p>
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With the rounded corner elements appended to each submenu, the next step is to define 
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the styles that create the rounded corner effect.  Start by overriding the values for 
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<code>border</code> and <code>padding</code> specified for the content box of each submenu in the 
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Sam skin CSS.  The top and bottom borders are set to 0, since both borders will be drawn by the 
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background image used to create the rounded corners.  The top and bottom padding will be created by 
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setting the height of each <code>&#60;div&#62;</code> inside the 
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<code>&#60;div class="yui-menu-corner"&#62;</code>.
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</p>
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<textarea name="code" class="CSS" cols="60" rows="1">
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/*
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	Overide the values for border and padding specified for the content box of each submenu in 
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	the Sam skin CSS.  The top and bottom borders are set to 0, since both borders will be drawn 
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	by the background image used to create the rounded corners.  The top and bottom padding 
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	will be created by setting the height of each <div> inside the 
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	<div class="yui-menu-corner">.
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*/
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#productsandservices .yui-menu .yui-menu-content {
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	border-top: 0;
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	border-bottom: 0;
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	padding: 0;
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}
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</textarea>
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<p>
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Next, define the styles for each corner element.  The <code>&#60;div&#62;</code>s for the top-left 
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and bottom-left corners define a right margin that will provide space for the their inner 
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<code>&#60;div&#62;</code>s to fill using a negative right margin.  Each inner 
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<code>&#60;div&#62;</code> will define a left margin to reveal the background image applied to 
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its parent <code>&#60;div&#62;</code>.
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</p>
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<textarea name="code" class="CSS" cols="60" rows="1">
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.yui-menu-corner {
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	margin-right: 4px;	/*	Reserve space for the top-right and bottom-right corners. */
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	/* The background image (sprite) for the top-left and bottom-left corners. */
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	background: url(assets/round.png) no-repeat;
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}
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.yui-menu-corner div {
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	height: 4px;
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	margin: 0 -4px 0 4px;	/*	Use a negative right margin to move the <div> into 
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								the right margin of the parent element 
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								(<div class="yui-menu-corner">) to draw the top-right 
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								and bottom-right corners.
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								Apply a left margin to reveal the background image 
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								applied to the parent element for the top-left and 
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								bottom-left corners. */
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	/* The background image (sprite) for the top-right and bottom-right corners. */
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	background: url(assets/round.png) no-repeat;
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	_position: relative;	/*	Necessary to get negative margins working in IE 6 
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								(Standards Mode and Quirks Mode and IE 7 (Quirks 
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								Mode only). */
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	_font-size: 0;	/*	Necessary to collapse the height of the <div> in IE 6 
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						(Standards Mode and Quirks Mode and IE 7 (Quirks Mode only) so 
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						that it renders at 4px tall.  */
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}
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</textarea>
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<p>
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The last step is to simply set <code>background-position</code> property for the bottom-left, 
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top-right, and bottom-right corner elements to reveal the corresponding section of the corner 
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background image.
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</p>
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<textarea name="code" class="CSS" cols="60" rows="1">
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/*
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	Set the "background-position" property for the bottom-left, top-right, and 
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	bottom-right corner elements to reveal the corresponding section of the corner 
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	background image.
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*/
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.yui-menu-corner-bl {
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	background-position: left bottom;
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}
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.yui-menu-corner .yui-menu-corner-tr {
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	background-position: top right;
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}
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.yui-menu-corner .yui-menu-corner-br {
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	background-position: right bottom;
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}
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</textarea>				</div>
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				<div class="yui-u sidebar">
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					<div id="examples" class="mod box4">
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                        <div class="hd">
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						<h4>
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    MenuNav Node Plugin Examples:</h4>
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                        </div>
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						<div class="bd">
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							<ul>
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								<li><a href='../node-menunav/node-menunav-1.html'>Basic Left Nav</a></li><li><a href='../node-menunav/node-menunav-2.html'>Basic Top Nav</a></li><li><a href='../node-menunav/node-menunav-3.html'>Menu Button Top Nav</a></li><li><a href='../node-menunav/node-menunav-4.html'>Split Button Top Nav</a></li><li><a href='../node-menunav/node-menunav-5.html'>Left Nav With Submenus With Shadows</a></li><li class='selected'><a href='../node-menunav/node-menunav-6.html'>Left Nav With Submenus With Rounded Corners</a></li><li><a href='../node-menunav/node-menunav-7.html'>Skinning Menus Created Using the MenuNav Node Plugin</a></li><li><a href='../node-menunav/node-menunav-8.html'>Adding Submenus On The Fly</a></li>							</ul>
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						</div>
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					</div>
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					<div class="mod box4">
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                        <div class="hd">
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						<h4>More MenuNav Node Plugin Resources:</h4>
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                        </div>
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                        <div class="bd">
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						<ul>
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							<!-- <li><a href="http://developer.yahoo.com/yui/node-menunav/">User's Guide</a> (external)</li> -->
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						<li><a href="../../api/module_node-menunav.html">API Documentation</a></li>
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</ul>
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                        </div>
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					</div>
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			  </div>
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		</div>
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		</div>
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	</div>
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<div class="yui-b toc3" id="tocWrapper">
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<!-- TABLE OF CONTENTS -->
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<div id="toc">
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<ul>
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<li class="sect first">YUI 3.x Project</li><li class="item"><a title="The Yahoo! User Interface (YUI) Library, 3.x Branch, " href="http://developer.yahoo.com/yui/3/">YUI 3 Web Site (external)</a></li><li class="item"><a title="Examples of every YUI utility and control in action" href="../../examples/">YUI 3 Examples</a></li><li class="item"><a title="Instantly searchable API documentation for the entire YUI library." href="../../api/">YUI 3 API Docs</a></li><li class="item"><a title="The YUI Library can be downloaded from SourceForge" href="http://sourceforge.net/projects/yui/">YUI 3 on Sourceforge (external)</a></li><li class="item"><a title="YUI is free and open, offered under a BSD license." href="http://developer.yahoo.com/yui/3/license.html">YUI License (external)</a></li><li class="sect">YUI 3 Core - Examples</li><li class="item"><a title="YUI (Global Prerequisite) - Functional Examples" href="../../examples/yui/index.html">YUI (Global Prerequisite)</a></li><li class="item"><a title="Event - Functional Examples" href="../../examples/event/index.html">Event</a></li><li class="item"><a title="Node - Functional Examples" href="../../examples/node/index.html">Node</a></li><li class="sect">YUI 3 Component Infrastructure - Examples</li><li class="item"><a title="Attribute - Functional Examples" href="../../examples/attribute/index.html">Attribute</a></li><li class="item"><a title="Plugin - Functional Examples" href="../../examples/plugin/index.html">Plugin</a></li><li class="item"><a title="Widget - Functional Examples" href="../../examples/widget/index.html">Widget</a></li><li class="sect">YUI 3 Utilities - Examples</li><li class="item"><a title="Animation - Functional Examples" href="../../examples/anim/index.html">Animation</a></li><li class="item"><a title="Cache - Functional Examples" href="../../examples/cache/index.html">Cache</a></li><li class="item"><a title="Cookie - Functional Examples" href="../../examples/cookie/index.html">Cookie</a></li><li class="item"><a title="DataSchema - Functional Examples" href="../../examples/dataschema/index.html">DataSchema</a></li><li class="item"><a title="DataSource - Functional Examples" href="../../examples/datasource/index.html">DataSource</a></li><li class="item"><a title="DataType - Functional Examples" href="../../examples/datatype/index.html">DataType</a></li><li class="item"><a title="Drag &amp; Drop - Functional Examples" href="../../examples/dd/index.html">Drag &amp; Drop</a></li><li class="item"><a title="Get - Functional Examples" href="../../examples/get/index.html">Get</a></li><li class="item"><a title="History - Functional Examples" href="../../examples/history/index.html">History</a></li><li class="item"><a title="ImageLoader - Functional Examples" href="../../examples/imageloader/index.html">ImageLoader</a></li><li class="item"><a title="IO - Functional Examples" href="../../examples/io/index.html">IO</a></li><li class="item"><a title="JSON (JavaScript Object Notation) - Functional Examples" href="../../examples/json/index.html">JSON</a></li><li class="item"><a title="Queue - Functional Examples" href="../../examples/queue/index.html">Queue</a></li><li class="item"><a title="Stylesheet - Functional Examples" href="../../examples/stylesheet/index.html">Stylesheet</a></li><li class="sect">YUI 3 Widgets - Examples</li><li class="item"><a title="Overlay - Functional Examples" href="../../examples/overlay/index.html">Overlay</a></li><li class="item"><a title="Slider - Functional Examples" href="../../examples/slider/index.html">Slider</a></li><li class="sect">YUI 3 Node Plugins - Examples</li><li class="item"><a title="FocusManager Node Plugin - Functional Examples" href="../../examples/node-focusmanager/index.html">FocusManager Node Plugin</a></li><li class="item"><a title="MenuNav Node Plugin - Functional Examples" href="../../examples/node-menunav/index.html">MenuNav Node Plugin</a></li><li class="sect">YUI 3 CSS - Examples</li><li class="item"><a title="YUI CSS Reset - Functional Examples" href="../../examples/cssreset/index.html">CSS Reset</a></li><li class="item"><a title="YUI Fonts - Functional Examples" href="../../examples/cssfonts/index.html">CSS Fonts</a></li><li class="item"><a title="YUI Base - Functional Examples" href="../../examples/cssbase/index.html">CSS Base</a></li><li class="sect">YUI 3 Developer Tools - Examples</li><li class="item"><a title="Console - Functional Examples" href="../../examples/console/index.html">Console</a></li><li class="item"><a title="Profiler - Functional Examples" href="../../examples/profiler/index.html">Profiler</a></li><li class="item"><a title="Test - Functional Examples" href="../../examples/test/index.html">Test</a></li><li class="sect">The YUI Community</li><li class="item"><a title="The Yahoo! User Interface Blog" href="http://yuiblog.com">YUI Blog (external)</a></li><li class="item"><a title="The Yahoo! Group YDN-JavaScript hosts the YUI community forum" href="http://tech.groups.yahoo.com/group/ydn-javascript/">YUI Forum (external)</a></li><li class="item"><a title="The Yahoo! Group yui3 is dedicated to the 3.x branch of the Yahoo! User Interface (YUI) Library." href="http://tech.groups.yahoo.com/group/yui3/">YUI 3 Forum (external)</a></li><li class="item"><a title="YUI is used by Yahoo! and by hundreds of other sites, including many you know and love." href="/yui/poweredby/">YUI Sightings (external)</a></li><li class="item"><a title="Videos and podcasts from the YUI Team and from the Yahoo! frontend engineering community." href="http://developer.yahoo.com/yui/theater/">YUI Theater (external)</a></li><li class="sect">YUI Articles on the YUI Website</li><li class="item"><a title="Answers to Frequently Asked Questions about the YUI Library" href="http://developer.yahoo.com/yui/articles/faq/">YUI FAQ (external)</a></li><li class="item"><a title="Yahoo!'s philosophy of Graded Browser Support" href="http://developer.yahoo.com/yui/articles/gbs/">Graded Browser Support (external)</a></li><li class="item"><a title="Reporting Bugs and Making Feature Requests for YUI Components" href="http://developer.yahoo.com/yui/articles/reportingbugs/">Bug Reports/Feature Requests (external)</a></li><li class="item"><a title="Serve YUI source files from Yahoo! -- free, fast, and simple" href="http://developer.yahoo.com/yui/3/articles/hosting/">Serving YUI Files from Yahoo! (external)</a></li></ul>
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	</div><!--closes bd-->
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	<div id="ft">
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        <p class="first">Copyright &copy; 2009 Yahoo! Inc. All rights reserved.</p>
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        <p><a href="http://privacy.yahoo.com/privacy/us/devel/index.html">Privacy Policy</a> - 
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            <a href="http://docs.yahoo.com/info/terms/">Terms of Service</a> - 
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            <a href="http://docs.yahoo.com/info/copyright/copyright.html">Copyright Policy</a> - 
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            <a href="http://careers.yahoo.com/">Job Openings</a></p>
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	</div>
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<script src="../../assets/dpSyntaxHighlighter.js"></script>
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<script language="javascript"> 
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dp.SyntaxHighlighter.HighlightAll('code'); 
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</script>
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