expand/collapse news articles

Asked by: rcmb

I have a list of news items that is database driven. I need the ability to have the user click "+" next to the headline to show the actual article. When they click the "+" changes to "-". If they click the "-" the article collapses.

If the click on any other "+" to view a different article then the any other open/expanded article is collapsed automatically.

Make sense?

I am not a novice but not an expert so I can understand most of what you give me.

Thanks in advance for all your help and advice.

Curtis

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Full code with two examples.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled</title>
 
<style type="text/css">
<!--
.collapsibleTree{list-style-type:none;}
.openMenuLabel{cursor:hand;background: transparent url(http://illinoislottery.com/images/open.gif) no-repeat scroll 0px 5px; padding-left:15px;}
.closeMenuLabel{cursor:hand;background: transparent url(http://illinoislottery.com/images/closed.gif) no-repeat scroll 0px 5px; padding-left:15px;}
 
.openSubMenu{display:'';}
.closeSubMenu{display:none;}
-->
</style>
 
</head>
<body>
<script type="text/javascript">
var lastOpened={};
lastOpened.item=null;
lastOpened.labl=null;
/*
 *argument 1: id or DOM node of menu
 *argument 2: id or DOM node of menu's Label
*/
function toggleMenu(idx,labl)
{
	idx = typeof(idx)=="string" ? document.getElementById(idx) : idx;
	labl = typeof(labl)=="string" ? document.getElementById(labl) : labl;
	if( idx && labl )
	{
	  	if(/\bcloseSubMenu\b/.test(idx.className) )
		{
			expand(idx,labl);
			//labl.className = labl.className.replace(/\bopenMenuLabel\b/,"closeMenuLabel");
			//idx.className = idx.className.replace(/\bcloseSubMenu\b/,"openSubMenu");
		}
		else if(/\bopenSubMenu\b/.test(idx.className) )
		{
			collapse(idx,labl);
			//labl.className = labl.className.replace(/\bcloseMenuLabel\b/,"openMenuLabel");
			//idx.className = idx.className.replace(/\bopenSubMenu\b/,"closeSubMenu");
		}
		openedItem=idx;
	}
	else if( !idx )
	{
		alert("Supplied idx argument may not be an existing element node, id or your browser has no DOM support.");
	}
	else if( !lbl )
	{
		alert("Supplied lbl argument may not be an existing element node, id or your browser has no DOM support.");
	}
} 
function expand(idx,labl)
{
	idx = typeof(idx)=="string" ? document.getElementById(idx) : idx;
	labl = typeof(labl)=="string" ? document.getElementById(labl) : labl;
	if( idx && labl )
	{
		labl.className = labl.className.replace(/\bopenMenuLabel\b/,"closeMenuLabel");
		idx.className = idx.className.replace(/\bcloseSubMenu\b/,"openSubMenu");
		lastOpened.item=idx;
		lastOpened.labl=labl;
	}
}
function collapse(idx,labl)
{
	idx = typeof(idx)=="string" ? document.getElementById(idx) : idx;
	labl = typeof(labl)=="string" ? document.getElementById(labl) : labl;
	if( idx && labl )
	{
		labl.className = labl.className.replace(/\bcloseMenuLabel\b/,"openMenuLabel");
		idx.className = idx.className.replace(/\bopenSubMenu\b/,"closeSubMenu");
	}
}
function closeLast()
{
	if( lastOpened.item && lastOpened.labl )
	{
		collapse(lastOpened.item,lastOpened.labl);
	}
}
</script>
 
<ul class="collapsibleTree">
	<li>
		<span id="preferencesLabel" onClick="closeLast();toggleMenu('preferences',this.id)" class="openMenuLabel">List 1:  Click this item to expand my sublist and stay open until somebody clicks on me again.</span>
		<ul id="preferences" class="closeSubMenu">
			<li><a href="#" onclick="openinnewwindow">Sublist item 1 - do not collapse list when you click on me</a></li>
			<li><a href="#" onclick="openinnewwindow">Sublist item 2 - do not collapse list when you click on me</a></li>
			<li><a href="#" onclick="openinnewwindow">Sublist item 3 - do not collapse list when you click on me</a></li>
		</ul>
	</li>
 
	<li>
		<span id="defaultsLabel" onClick="closeLast();toggleMenu(document.getElementById('defaults'),'defaultsLabel')" class="openMenuLabel">List 1:  Click this item to expand my sublist and stay open until somebody clicks on me again.</span>
		<ul id="defaults" class="closeSubMenu">
			<li><a href="#" onclick="openinnewwindow">Sublist item 1 - do not collapse list when you click on me</a></li>
			<li><a href="#" onclick="openinnewwindow">Sublist item 2 - do not collapse list when you click on me</a></li>
			<li><a href="#" onclick="openinnewwindow">Sublist item 3 - do not collapse list when you click on me</a></li>
		</ul>
	</li>
</ul>
<hr />
 
<div>
		<span id="preferencesLabel2" onClick="closeLast();toggleMenu('preferences2',this.id)" class="openMenuLabel">List 1:  Click this item to expand my sublist and stay open until somebody clicks on me again.</span>
		<div id="preferences2" class="closeSubMenu">
			<p>Some data ................................................</p>
			<p>Some data ................................................</p>
			<p>Some data ................................................</p>
		</div>
</div>
 
<div>
		<span id="preferencesLabel3" onClick="closeLast();toggleMenu('preferences3',this.id)" class="openMenuLabel">List 1:  Click this item to expand my sublist and stay open until somebody clicks on me again.</span>
		<div id="preferences3" class="closeSubMenu">
			<p>Some data ................................................</p>
			<p>Some data ................................................</p>
			<p>Some data ................................................</p>
		</div>
</div> 
 
</body>
</html>

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expand/collapse news articles

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