/* #nav dropdown */
function dropDownNav()
{
	var sfEls = document.getElementById("siteMenu").getElementsByTagName("LI");
	for (var i=0 ; i < sfEls.length ; i++)
	{
		sfEls[i].onmouseover = function()
		{
			this.className += " sfhover";
			this.style.zIndex=200;
		}
		sfEls[i].onmouseout=function()
		{
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}

/* Check for elements to attach drop down functions to */
function elementChecker()
{
	/* check for main nav */
	if (document.getElementById("siteMenu") != null)
	{
		dropDownNav();
	}
}

/* onload run element checker function */
if (window.attachEvent)
{
	window.attachEvent("onload", elementChecker);
}