function Login_Validator(theForm){


  if(theForm.UserID.value == '')
  {
    alert("Please enter your username.");
    theForm.UserID.focus();
    return (false);
  }
  
   if(theForm.UserID.value == 'Username')
  {
    alert("Please enter your username.");
    theForm.UserID.focus();
    return (false);
  }
  


   if(theForm.Password.value == 'Password')
  {
    alert("Please enter your Password.");
    theForm.Password.focus();
    return (false);
  }
  




    
var checkData = theForm.UserID.value;
var Field = "UserID";

if (checkData != "")
{
	var resp = allowLettersNumbers(checkData, Field)
	if (resp == 0)
	{
	theForm.UserID.value = "";
	theForm.UserID.focus();
    return (false);
	}
		
}    
        
    
var checkData = theForm.Password.value;
var Field = "Password";

if (checkData != "")
{
	var resp = allowLettersNumbers(checkData, Field)
	if (resp == 0)
	{
	theForm.Password.value = "";
	theForm.Password.focus();
    return (false);
	}
		
}




 
  
}