function hideDiv(div){
		document.getElementById(div).style.display='none';
	}
	
function displayDiv(div){
		document.getElementById(div).style.display='block';
	}

function displayAlternate(div){
	if(document.getElementById(div).style.display=='none') { $('#'+div).fadeIn('def'); }
  else { $('#'+div).fadeOut('def'); }

}

function displayAlternate_period(div){
	if(document.getElementById(div).style.display=='block') document.getElementById(div).style.display='none';
	else document.getElementById(div).style.display='block';
}

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