/*---------------------------------------------------------------------------------------
 * Description:
 * This file contains validation code pulled from the intranet.
 *
 * Change Log:
 * xxxx/xx/xx xxxxxxx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
 *---------------------------------------------------------------------------------------*/

var reWhitespace = /^\s+$/
var reLetter = /^[a-zA-Z]$/
var reAlphabetic = /^[a-zA-Z]+$/
var reAlphanumeric = /^[a-zA-Z0-9]+$/
var reDigit = /^\d$/
var reLetterOrDigit = /^([a-zA-Z]|\d)$/
var reInteger = /^\d+$/
var reSignedInteger = /^(\+|\-)?\d+$/
var reFloat = /^((\d+(\.\d*)?)|((\d*\.)?\d+))$/
var reSignedFloat = /^(((\+|\-)?\d+(\.\d*)?)|((\+|\-)?(\d*\.)?\d+))$/
var digits = "0123456789";
var lowercaseLetters = "abcdefghijklmnopqrstuvwxyz"
var uppercaseLetters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
var whitespace = " \t\n\r";
var defaultEmptyOK = false

function isEmpty(s)
{   return ((s == null) || (s.length == 0))
}

function isWhitespace (s)
{   return (isEmpty(s) || reWhitespace.test(s));
}

function stripCharsInRE (s, bag)
{       return s.replace(bag, "")
}

function stripCharsInBag (s, bag)
{   var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (bag.indexOf(c) == -1) returnString += c;
    }

    return returnString;
}
function stripCharsNotInBag (s, bag)
{   var i;
    var returnString = "";
    for (i = 0; i < s.length; i++)
    {   
        var c = s.charAt(i);
        if (bag.indexOf(c) != -1) returnString += c;
    }

    return returnString;
}

function stripWhitespace (s)
{   return stripCharsInBag (s, whitespace)
}

function charInString (c, s)
{   for (i = 0; i < s.length; i++)
    {   if (s.charAt(i) == c) return true;
    }
    return false
}

function stripInitialWhitespace (s)
{   var i = 0;
    while ((i < s.length) && charInString (s.charAt(i), whitespace))
       i++;
    return s.substring (i, s.length);
}

function isLetter (c)
{   return reLetter.test(c)
}

function isDigit (c)
{   return reDigit.test(c)
}

function isLetterOrDigit (c)
{   return reLetterOrDigit.test(c)
}

function isInteger (s)
{  
    if (isEmpty(s)) 
       if (isInteger.arguments.length == 1) return defaultEmptyOK;
       else return (isInteger.arguments[1] == true);

    return reInteger.test(s)
}

function isSignedInteger (s)
{
	if (isEmpty(s)) 
		if (isSignedInteger.arguments.length == 1) return defaultEmptyOK;
		else return (isSignedInteger.arguments[1] == true);
  	return reSignedInteger.test(s);

}

function isPositiveInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isPositiveInteger.arguments.length > 1)
        secondArg = isPositiveInteger.arguments[1];

    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) > 0) ) );
}

function isNonnegativeInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNonnegativeInteger.arguments.length > 1)
        secondArg = isNonnegativeInteger.arguments[1];
   return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) >= 0) ) );
}

function isNegativeInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNegativeInteger.arguments.length > 1)
        secondArg = isNegativeInteger.arguments[1];



    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) < 0) ) );
}

function isNonpositiveInteger (s)
{   var secondArg = defaultEmptyOK;

    if (isNonpositiveInteger.arguments.length > 1)
        secondArg = isNonpositiveInteger.arguments[1];


    return (isSignedInteger(s, secondArg)
         && ( (isEmpty(s) && secondArg)  || (parseInt (s) <= 0) ) );
}

function isFloat (s)
{   if (isEmpty(s)) 
       if (isFloat.arguments.length == 1) return defaultEmptyOK;
       else return (isFloat.arguments[1] == true);

    return reFloat.test(s)
}

function isSignedFloat (s)
{	
	if (isEmpty(s)) 
		if (isSignedFloat.arguments.length == 1) return defaultEmptyOK;
		else return (isSignedFloat.arguments[1] == true);
  	return reSignedFloat.test(s)
}

function isAlphabetic (s)
{   
    if (isEmpty(s)) 
       if (isAlphabetic.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphabetic.arguments[1] == true);

    else {
       return reAlphabetic.test(s)
    }
}

function isAlphanumeric (s)
{   
	if (isEmpty(s)) 
       if (isAlphanumeric.arguments.length == 1) return defaultEmptyOK;
       else return (isAlphanumeric.arguments[1] == true);

    else {
       return reAlphanumeric.test(s)
    }
}

function reformat (s)
{   var arg;
    var sPos = 0;
    var resultString = "";

    for (var i = 1; i < reformat.arguments.length; i++) {
       arg = reformat.arguments[i];
       if (i % 2 == 1) resultString += arg;
       else {
           resultString += s.substring(sPos, sPos + arg);
           sPos += arg;
       }
    }
    return resultString;
}

function warnEmpty (theField, s)
{   
	 theField.focus()
	 alert(mPrefix + s + mSuffix)
    return false
}

function warnInvalid (theField, s)
{   
	 theField.focus()
    theField.select()
    alert(s)
    return false
}

function checkString (theField, s, emptyOK)
{   
	if (checkString.arguments.length == 2) emptyOK = defaultEmptyOK;
   if ((emptyOK == true) && (isEmpty(theField.value))) return true;
   if (isWhitespace(theField.value)) 
      return warnEmpty (theField, s);
   else return true;
}