// JavaScript Document
function chkback()
{
	if(document.getElementById("txtemail").value=='email or mobile number')
	{
	alert("Please enter mobile or email id.");
	document.getElementById("txtemail").value='';
	document.getElementById("txtemail").focus();
	return false;
	}
	if(document.getElementById("txtemail").value=='')
	{
	alert("Please enter mobile or email id.");
	//document.getElementById("txtemail").value='email or mobile number';
	document.getElementById("txtemail").focus();
	return false;
	}
	document.Form1.action="chkinvite_new.asp";
	document.Form1.submit();
	
}