function validlogin(f1)
     {
		 if(f1.vUserName.value=="")
		 {
		 	alert("Please Enter the  UserName");
			f1.vUserName.focus();
		 	return false;
		 }
		if(f1.vPassword.value=="")
		 {
		 	alert("Please Enter the Password");
			f1.vPassword.focus();
		 	return false;
		 }
    }