function chg_session(nom_sess,champs){
	var chang=$(champs).value;
	//alert(nom_sess+" "+chang);
	var pars = 'valsession='+nom_sess+'&lavaleur='+chang;
	var ajax = new Ajax.Request(
	     			'objets/chang_session.php',
	     			{
						//evalScripts:true,
						parameters: pars,        
						method:'get',
	        			onComplete: showResponse
	      			});
					function showResponse(req)
					{
						//var vresultat = req.responseText;
						//alert(req.responseText);
					}
}
function chg_lang(val_att,page){
	//alert(val_att+" "+page);
	var pars = 'lavaleur='+val_att;
	var ajax = new Ajax.Request(
	     			'objets/change_langue.php',
	     			{
						//evalScripts:true,
						parameters: pars,        
						method:'get',
	        			onComplete: showResponse
	      			});
					function showResponse(req)
					{
						//var vresultat = req.responseText;
						//alert(req.responseText);
						document.location.href=page;
					}
}