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


/* pulled from http://www.accessify.com/tutorials/the-perfect-pop-up.asp */
function popUp( strURL, strType, strHeight, strWidth ) {
   var strOptions = "";
   if( strType == "console" ) { strOptions = "resizable,height="+strHeight+",width="+strWidth; }
   if( strType == "fixed" ) {   strOptions = "status,height="+strHeight+",width="+strWidth; }
   if( strType == "elastic" ) { strOptions = "toolbar,menubar,scrollbars,resizable,location,height="+strHeight+",width="+strWidth; }
   window.open( strURL, 'newWin', strOptions );
}