function namosw_goto(url, targetstr)
{
  if (url == 'backward')
    history.back(1);
  else if (url == 'forward')
    history.forward(1);
  else {
     if (targetstr == 'blank') {
       window.open(url, 'win1');
     } else {
       var frameobj;
       if (targetstr == '') targetstr = 'self';
       if ((frameobj = eval(targetstr)) != null)
         frameobj.location = url;
     }
  }
}
function Envoyer(form) {
		          if(form.qty1.value == '0')
  {
    alert('Vous devez rentrer une quantité');
    return(false);
  }
		          if(form.product1.value == '0')
  {
    alert('Vous devez choisir une couleur');
    return(false);
  }
  {
                       form.submit();
		              }}