function verif_mail(){
			check_mail_var = "undefined";
			$("img[@name=change]").attr({ src: "img/load.gif", alt: "NON" });
			$("img[@class=change]").css({visibility : "visible"});
			email = $("input[@name=0_mail]").val();
			
			//récupération de la validité du mail via la page jquery.php//
			$.get('jquery.php', { mail : email },
			function(data){
				if (data==1){
				//MAIL VALIDE//
					$("input[@name=0_mail]").removeClass("error");
					//$("input[@value=Je participe]").attr({ disabled: false});
					$("img[@name=change]").attr({ src: "img/on.gif", alt: "NON" });
					$("img[@class=change]").css({visibility : "visible"});
					check_mail_var = "yes";
				}
				else
				{
				//MAIL INCORRECT//
					$("input[@name=0_mail]").addClass("error");
					//$("input[@value=Je participe]").attr({ disabled: true});
					$("img[@name=change]").attr({ src: "img/off.gif", alt: "NON" });
					$("img[@class=change]").css({visibility : "visible"});
					check_mail_var = "no";
				}
			}
		);
	}