function toggle( targetId ){
  if (document.getElementById){
        target = document.getElementById( targetId );
           if (target.style.display == "none"){
              target.style.display = "block";
           } else {
              target.style.display = "none";
           }
     }
}

function confirmSubmit()
{
var agree=confirm("esta seguro?");
if (agree)
	return true ;
else
	return false ;
}