// for coding the string look here
	//
	// http://www.braner-net.de/computer/software/jscrypt.htm

	function Crypt (Str)
	{
	   var s = new String;
	   var i;
	   var c = new Number;                   
	
	   for (i=0; i<Str.length; i++)
	   {
	      c = Str.charCodeAt (i)^i;
	      if (c < 16)
	      {
	         s += '0'+c.toString (16);
	      }
	      else
	      {
	         s += c.toString (16);
	      }
	   }
	
	   return s;
	}
	
	function Decrypt (Str)
	{
	   var s = new String;
	   var i;
	
	   for (i=0; i<Str.length; i+=2)
	   {
	      s = s + String.fromCharCode (parseInt (Str.substr(i ,2), 16)^(i/2));
	   }
	
	   return s;
	}