function ouvrirfen1()
{
var largeur=700;
var hauteur=700;			 
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
var option='menubar=0,scrollbars=1,statusbar=1,resizable=0';
  window.open("lien_utile.html","lien_utile","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+option);
}
function ouvrirfen_contact()
{
var largeur=450;
var hauteur=380;			 
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
var option='menubar=0,scrollbars=0,statusbar=1,resizable=0';
  window.open("contact.php","lien_utile","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+option);
}
function ouvrirfen_contact_plan()
{
var largeur=480;
var hauteur=443;			 
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
var option='menubar=0,scrollbars=0,statusbar=1,resizable=0';
  window.open("plan.html","lien_utile","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+option);
}

function ouvrirfen_contact_societe()
{
var largeur=700;
var hauteur=400;			 
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
var option='menubar=0,scrollbars=0,statusbar=1,resizable=0';
  window.open("contact_societe.php","lien_utile","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+option);
}


function ouvrirfen_newsletter()
{
var largeur=365;
var hauteur=200;			 
var top=(screen.height-hauteur)/2;
var left=(screen.width-largeur)/2;
var option='menubar=0,scrollbars=0,statusbar=1,resizable=0';
  window.open("newsletter.php","lien_utile","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+option);
}