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 ChOn(chps){if(chps.value == "rechercher"){chps.value = "";}}
function ChOff(chps){if(chps.value == ""){chps.value = "rechercher";}}
function On(id){document.getElementById(id).className = "btnOn";} 
function Off(id){document.getElementById(id).className = "btn";}