var siren = /^[0-9]{9}$/; 
var codpost = /^[0-9]{5}$/;
var ape = /^[0-9]{4}[a-zA-Z]$/;    
var mail= /^[a-zA-Z0-9._-]+@[a-zA-Z0-9.-]{2,}[.][a-z]{2,3}$/; 

function verif() 
    { if((window.document.news.email.value=="") || (mail.test(window.document.news.email.value)==false)) 
	  			{  alert("Vous devez remplir un courriel valide"); window.document.news.email.focus();}                                       
     else {window.document.news.submit() ;}
	}