var baseClass = "";

function initSubnav()
{
	var arrAllLinks = document.getElementsByTagName("a");
	for (var isn_i=0; isn_i<arrAllLinks.length; isn_i++)
	{
		if (arrAllLinks[isn_i].className == "subnavLink")
		{
		    var navElem = document.getElementById("subNav");
		    baseClass = navElem.className;
		    
		    navElem.onmouseover = function(evt)
		    {
		        var srcElem = (evt)?evt.target:window.event.srcElement;
		        if (srcElem.tagName.toUpperCase() == "A")
		        {
		            subnavOn(srcElem.parentNode.id);
		        }
		    }

		    navElem.onmouseout = function(evt)
		    {
		        var srcElem = (evt)?evt.target:window.event.srcElement;
		        if (srcElem.tagName.toUpperCase() == "A")
		        {
		            subnavOff(srcElem.parentNode.id,navElem.className,srcElem);
		        }
		    }
		}
	}
}

function subnavOn(id)
{
    var ulSubnavElem = document.getElementById("subNav");
    ulSubnavElem.className = String(id);
}

function subnavOff(id, currSection)
{
    var ulSubnavElem = document.getElementById("subNav");
    ulSubnavElem.className = baseClass;
}


if (window.attachEvent)
{
    window.attachEvent("onload", initSubnav)
}
else
{
    window.onload=initSubnav;
}