sfHover = function() {
	var sfEls = document.getElementById("gallery").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);