function testform() {
		var mail = document.getElementById('addr').value;		
		var reponse = f_TestEmail(mail);
		if (reponse == false) {
			alert("Adresse E-mail invalide");
			return false;
		}else{
			return true;
		}
	
	}
	function f_TestEmail(entree)
		{
			var supported = 0 ;
			if (window.RegExp)
			{
				var tempStr = "a" ;
				var tempReg = new RegExp(tempStr) ;
				if (tempReg.test(tempStr))
				{
					supported = 1 ;
				}
			  }
			  if (!supported)
			{
				return (str.indexOf(".") > 2) && (str.indexOf("@") > 0) ;
			}
			  var r1 = new RegExp("(@.*@)|(\\.\\.)|(@\\.)|(^\\.)") ;
			  var r2 = new RegExp("^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,4}|[0-9]{1,4})(\\]?)$") ;
			  return (!r1.test(entree) && r2.test(entree)) ;
			
		}