function validateLogin(theForm)
{

  var retStatus = 0;

//  User Login Name Validation

  retStatus = allowedCharater(theForm.LogID.value,"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz123456_7890-",24,true);

  if(retStatus==1)
  {
    alert("Please enter a value for the Login ID and try again.");
  }

  if(retStatus==2)
  {
    alert("Maximum of 15 characters are allowed in the Login ID.");
  }

  if(retStatus==3)
  {
    alert("Only letter , digit and \"_-\" are allowed in the Login ID.");
  }

  if(retStatus==0)
  {
	  retStatus = startsOk(theForm.LogID.value,"-_");
	  if(retStatus!=0)
	  {
		alert("Login ID can not start or end with \"-_\".");
	  }
  }
  if(retStatus!=0)
  {
		theForm.LogID.focus();
  		theForm.LogID.select();
		return (false);
   }


// Ends

// User Password Checking

  retStatus = allowedCharater(theForm.PassWD.value, "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTU_-VWXYZ12345677890",15,true);

  if(retStatus==1)
  {
    alert("Please enter a value for the Password and try again.");
  }


  if(retStatus==2)
  {
    alert("Please enter at most 8 characters in the Password");
  }

  if(retStatus==3)
  {
    alert("Please enter only letter, digit and \"_-\" characters in the Password.");
  }

  if(retStatus!=0)
  {
 
    theForm.PassWD.focus();
    theForm.PassWD.select();
    return (false);
  }

// Ends
  return (true)

}

function allowedCharater(fieldToBeChecked, allowedChar,maxLength,isMust)
{
  if(isMust && fieldToBeChecked=="")
  {
    return 1; 
	
  }

  if(fieldToBeChecked.length>maxLength)
  {
    return 2; 
  }

  var checkOK = allowedChar;
  var checkStr = fieldToBeChecked;
  for (i = 0;  i < checkStr.length;  i++)
  {
    ch = checkStr.charAt(i);
    for (j = 0;  j < checkOK.length;  j++)
      if (ch == checkOK.charAt(j))
        break;
    if (j == checkOK.length)
    {
      return 3;
    }
  }
  return 0;

}

function startsOk(fieldToBeChecked,notAllowedChar)
{
  var checkField = fieldToBeChecked;
  var notAllowed = notAllowedChar;
  var chStart = checkField.charAt(0);
  var chEnd = checkField.charAt(checkField.length-1);

  for (j = 0;  j < notAllowed.length;  j++)
  {
	var chNotAllowed = notAllowed.charAt(j);
      	if((chStart == chNotAllowed) || (chEnd == chNotAllowed))
	{
		return 1; // Not OK
	}
  }
  return 0; // OK

}