function showSelectBoxes(){
	var selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}
}
function hideSelectBoxes(){
	var selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "hidden";
	}
}

// Menu déroulants - navigation
sfHover = function() {
	if(document.getElementById("header-nav")!= null) {
	//var IE6 = /msie|MSIE 6/.test(navigator.userAgent);
	var sfEls = document.getElementById("header-nav").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
			//if (IE6) hideSelectBoxes();
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
			//if (IE6) showSelectBoxes();
		}
	}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);