function gotosite(site) {
        if (site != "") {
                self.location=site;
        }
}

function okno(url, width, height) {
	xx=(screen.availHeight-height)/2-10;
	yy=(screen.availWidth-width)/2;
        var Win = window.open(url,"displayWindow",'width=' + width + ',height=' + height + ',top='+xx+',left='+yy+',resizable=0,scrollbars=yes,menubar=no' );
}
<!--//--><![CDATA[//><!--

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);

//--><!]]>