sfHover = function() {
	var navobj = document.getElementById("nav");
	if (navobj) {
		var sfEls = navobj.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);

/**
*	Geef hoofditem in menu een class
*/
function settab(id,state) {
	//alert(id+"\r\n"+state)
	if (state==1) { 
		css=document.getElementById(id).className+' tab'; 
	}
	else { 
		css=document.getElementById(id).className.replace(' tab',''); 
	} 
	document.getElementById(id).className = css;
}