function radio_checker(dradio)
	{
		var radio_choice = false;
		for (counter = 0; counter < dradio.length; counter++)
		{
			if (dradio[counter].checked)
			radio_choice = true; 
		}
		return radio_choice;
	}
	function abreJanela(theURL,winName,features) {
  window.open(theURL,winName,features);
}