function checkradio( idName ) {
	var elem = document.getElementById(idName);
	var form1 = document.getElementById('form1');
	var form2 = document.getElementById('form2');
	var form3 = document.getElementById('form3');
	if(idName == "form1") {
		form1.style.display = "";
		form2.style.display = "none";
		form3.style.display = "none";
	}
	if(idName == "form2") {
		form1.style.display = "none";
		form2.style.display = "";
		form3.style.display = "none";
	}
	if(idName == "form3") {
		form1.style.display = "none";
		form2.style.display = "none";
		form3.style.display = "";
	}
}