function validateData()
	{
	var objForm = eval ('window.document.Login');
	if (stringLength (trimValue (objForm.UserName.value))== 0)
		{
		alert ('Please enter username.');
		objForm.UserName.focus ();
		return false;
		}
	if (stringLength (trimValue (objForm.Password.value))== 0)
		{
		alert ('Please enter password.');
		objForm.Password.focus ();
		return false;
		}
	}