// JavaScript Document
	var whitespace = " \t\n\r";
// Function to check whether the value in a Text Field is Null
	function isEmpty(s)
	{  return ((s == null) || (s.length == 0))
	}
// Function to check whether the value in a Text Field is a WhiteSpace
	function isWhitespace (s)
	{  var i;
 	  // Is s empty?
 	  if (isEmpty(s)) return true;
 	   // Search through string's characters one by one
 	   // until we find a non-whitespace character.
 	   // When we do, return false; if we don't, return true.
 	   for (i = 0; i < s.length; i++)
 	   {   
 	  // Check that current character isn't whitespace.
 	  var c = s.charAt(i);
 	  if (whitespace.indexOf(c) == -1) return false;
 	   }
 	   // All characters are whitespace.
	  return true;
	}
// Function to ensure that the email address is in proper format
	function isEmail (s)
  	{
    var i = 1;
    var sLength = s.length;
    // look for @
    while ((i < sLength) && (s.charAt(i) != "@"))
    { i++
    }
    if ((i >= sLength) || (s.charAt(i) != "@")) return false;
    else i += 2;
    // look for .
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }
	  // there must be at least one character after the .
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
    }
 function isWebsite (s)
  	{
    var i = 1;
    var sLength = s.length;
    while ((i < sLength) && (s.charAt(i) != "."))
    { i++
    }
    if ((i >= sLength - 1) || (s.charAt(i) != ".")) return false;
    else return true;
    }
  function isCharsInBag (s, bag)
  {  
  var i;
  for (i = 0; i < s.length; i++)
  {   
    var c = s.charAt(i);
    if (bag.indexOf(c) == -1)
	 return false;
  }
  return true;
  }