YAHOO.util.Event.onAvailable('footer', function() { assignFormButtonsEvents(document.body); });

function assignFormButtonsEvents(el)
{
  var divs=getElementsByClassName(el,'div','PFormValid');
  for (var i=0;i<divs.length;i++)
  {
    divs[i].onclick = function()
    {
      var form=this.parentNode.parentNode;
      if (form.onsubmit)
      {
        if (form.onsubmit()) { form.submit(); }
      }
      else
      {
        form.submit();
      }
    };
  }
}