function chkEmail(){
	
	var email;
	email = document.getElementById("txt_email");
	
	//////////////////////////////////////////////////////////////////////////
	if(email.value == "" || email.value == "Required" || email.value == "Invalid Entry"){
		//alert('Please enter EMAIL');
		email.value = "Required"
		email.focus();
		return false;
	}else{
		var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9])+$/;
		if (filter.test(email.value)){

		}else {
			//alert('Please enter a valid EMAIL address');
			email.value = "Invalid Entry"
			email.focus();
			return false;
		}
	}
}