//Return var from the url like $_GET in PHP
function getVarFromURL(param, url) {
 	var chaine=window.location.search;
	if (url) {
		chaine = url;
	}
	var contenu = "";
 	chaine=chaine.substring(1);
 	var dz=chaine.indexOf("#",0);
 	if(dz!=-1) {
 		chaine=chaine.substring(0,dz);
	}
 	chaine=chaine+"&";
 	
	if(chaine.indexOf(param,0)!=-1){
 		var pos=chaine.indexOf(param,0);
 		var pos2=chaine.indexOf("=",pos);
 		var pos3=chaine.indexOf("&",pos);
 		contenu=chaine.substring(pos2+1,pos3);
	}
 	return contenu;
}