var tab_form= new Array;

function valider_form(n){
  var test_form=true;
  var message_form="";
  $('alert_form').setStyles('visibility: hidden;');
  for (i=0;i<tab_form.length;i++)
  { 
    if($(tab_form[i]).getValue()=="") {
    $(tab_form[i]).setStyles('border: solid 2px #000000;');
    test_form=false;
    }
    else {
    $(tab_form[i]).setStyles('border: solid 1px #D9D9D9;');
    }
  }
  
       
  if(test_form==false) {
  $('alert_form').setHTML(n);
  var instance = new Fx.Styles($('alert_form'), {duration: 200});
  instance.custom({'opacity': [0,1]});
  return false;
  }
  else {
  return true;
  }
}

function message_init(n) {
  $('alert_form').setHTML(n);
  var instance = new Fx.Styles($('alert_form'), {duration: 200});
  instance.custom({'opacity': [0,1]});
}