function verif_email_news(){

var c=form1.textfield.value;
for(var k = 0 ;k< c.length;k++){
var d = c.substring(k,k+1);
if(d=="@"){

return true;
}
}//for
alert("Votre E-mail n'est pas valide !");
form1.textfield.focus();
return false;

}

window.name='Valoris'; 

//function MM_openBrWindow(theURL,winName,features) {  window.open(theURL,winName,features);}
document.write('<table class="tab1" border="0" cellpadding="0" cellspacing="0" width="198">');
document.write('<tr><td  ><img src="img/newsletter.gif">');
document.write('</td></tr>'); 
document.write('<tr><td>');


document.write('<br><form name=\"form1\" method=\"post\" target="_blank" action=\"inscription_news.php\" onSubmit=\"return verif_email_news();\"><p><input type=\"text\" name=\"textfield\" value=\"votre email\" size=\"12\"><br><input type=\"radio\" name=\"radiobutton\" value=\"enregistre\">s\'enregistrer&nbsp;&nbsp;&nbsp;<br><input type=\"radio\" name=\"radiobutton\" value=\"desabonne\">se d&eacute;sabonner<br><input type=\"submit\" name=\"Submit\" value=\"Envoyer\"></p></form>');
document.write('</td></tr></table>');