// JavaScript Document
function ChangeClassNameStyle(idmenu) {
var objet;

objet = document.getElementById(idmenu);

var elems = document.getElementsByTagName("*");
 for ( var i = 0; ( elem = elems[i] ); i++ )
 		{
 		if ( elem.className == "apparent" )
 		{
 	elem.className = "cache";
 	}
 } 


 if (objet.className == "cache" )
 	objet.className = "apparent";
 else
  	objet.className = "cache";
}