function expandir(idExp) {
    if ($('#'+idExp).is(":hidden")) {
        $('#'+idExp).slideDown("slow");
      } else {
        $('#'+idExp).slideUp("slow");
      }
}

function popupform(myform, windowname) {
	if (!window.focus) return true;
	window.open('', windowname, 'height=550,width=800,scrollbars=yes');
	myform.target=windowname;
	return true;
}

function submitenter(myfield,e){
	var keycode;
	if (window.event) keycode = window.event.keyCode;
	else if (e) keycode = e.which;
	else return true;
	
	if (keycode == 13) {
		popupform(myfield.form,'a');
		myfield.form.submit();
		return false;
	} else {
		return true;
	}
}