function popUp(URL) {
     day = new Date();
     id = day.getTime();
     eval("page" + id + " = window.open(URL, '" + id + "', 'toolbars=0, scrollbars=1, location=0, statusbars=0, menubars=0, resizable=01, width=500, height=450, left = 20, top = 20');");
     }


 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);