function Submitform()
			{
		

			if  (document.sub.addr.value=='') alert("Adresse Email non valide");
			else 
				{
				if ( ((document.sub.addr.value.indexOf('@',1))==-1)||(document.sub.addr.value.indexOf('.',1))==-1 )
				      alert("Adresse Email non valide");
      				 
				else 	document.sub.submit();
			 	}
			
			 }