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);

function rollover(lieu,source) {

					chemin = 'images/menu/';
					lieu.src = chemin + source;
			}

			function rollout(lieu,source) {

					chemin = 'images/menu/';
					lieu.src = chemin + source;
			}