function toggleSubMenu()
{
	var oLi = this
    if(this.parentNode.className == "active")
		this.parentNode.className = "";
    else
		this.parentNode.className = "active";
}

function initialiseMenu()
{	
	var oLists = document.getElementsByTagName("UL")
	for(var n=0; n<oLists.length; n++)
	{
		var oList = oLists[n]
		if(oList.className == "collist")
		{
			var loHeaders = oList.getElementsByTagName("SPAN");
			for(var i = 0; i < loHeaders.length; i++)
			{   
			    var oHeader = loHeaders[i];
				if(oHeader.parentNode.tagName == "LI")
				    oHeader.onclick=toggleSubMenu;
			}
			loHeaders = oList.getElementsByTagName("H1");        
			for(var i = 0; i < loHeaders.length; i++)
			{   
			    var oHeader = loHeaders[i];
				if(oHeader.parentNode.tagName == "LI")
				    oHeader.onclick=toggleSubMenu;
			}
		}
	}
}