sfHover_service_nav = function() { 
	var sfEls = document.getElementById("service_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"), "");
		}
	}
};


function removeSfClasses() {
	var sfEls = document.getElementById("nav").getElementsByTagName("li");

	for (var i=0; i<sfEls.length; i++) {
			sfEls[i].className=sfEls[i].className.replace(new RegExp(" sfhover\\b"), "");
			sfEls[i].className=sfEls[i].className.replace(new RegExp(" sfhover_sub\\b"), "");
	}
}

if (navigator.platform == "Win32" && navigator.appName == "Microsoft Internet Explorer" && window.attachEvent) { 
	window.attachEvent("onload", sfHover_service_nav);
	window.attachEvent("onload", alphaBackgrounds); 
	window.attachEvent("onload", correctPNG); 
}