sfHover = function() {
            var sfEls = document.getElementById("nav").getElementsByTagName("LI");
            for (var i=0; i<sfEls.length; i++) {
                sfEls[i].onmouseover=function() {
                    this.className+=" sfhover";
                }
                sfEls[i].onmouseout=function() {
                    this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
                }
            }
        }
        if (window.attachEvent) window.attachEvent("onload", sfHover);

		function showPortfolioImage(s)
		{
			document.getElementById("portfolioImage").style.background = "url("+s+") no-repeat center center";
		}
		
		var prevmainitem = "";
		
		function selectParent(s) 
		{
			document.getElementById(s).style.background = 'url(gfx/menu_item_active.jpg) repeat-x top left';
			prevmainitem = s;
		}

		function deselectParent(s)
		{
			if(prevmainitem > "")
			{
				document.getElementById(s).style.background = 'url(gfx/menu_item_inactive.jpg) repeat-x top left';
			}
		}