function validData_login()
{

	if(document.forms(0).txtUserName.value.length<1)
		{
		 alert("Please enter a User Name.");
		 document.forms(0).txtUserName.focus();
		 return false;
		 }
	if(document.forms(0).txtPassword.value.length<1)
		{
		 alert("Please enter a Password.");
		 document.forms(0).txtPassword.focus();
		 return false;
		 }

	return true;
}