function gestion_submit_newsletter()
{

if(document.getElementById('mail_news').value == "") 
{  
document.getElementById('erreur_news').innerHTML = "<font class='texte_cours_n'>Il manque votre e-mail.</font>";
}

else
{

			
		var httpRequestInsert; 
 
    try {  httpRequestInsert = new ActiveXObject('Msxml2.XMLHTTP');   }
    catch (e) 
    {
        try {  	httpRequestInsert = new ActiveXObject('Microsoft.XMLHTTP');    }
        catch (e2)
        {
          try {  httpRequestInsert = new XMLHttpRequest();     }
          catch (e3) {  httpRequestInsert = false;   }
        }
     }  
	
httpRequestInsert.open('GET', "verif_newsletter.php?mail_news="+document.getElementById('mail_news').value+"", true);


    httpRequestInsert.onreadystatechange  = function()
	{ 
	
         if(httpRequestInsert.readyState  == 4)
         {
               if(httpRequestInsert.status == 200)
      			{
						document.getElementById('newsletter').innerHTML = httpRequestInsert.responseText; 
						}
						
			  		else
						{
						document.getElementById('newsletter').innerHTML = "<strong>erreur</strong>";
						}
        }
    }; 
   	httpRequestInsert.send(null); 

}
}