// Copyright (c) 2009 Firestorm Online Ltd 
// Author: Baz Firestorm
// For details, visit our web site web site: http://www.firestorm-online.com/

var $ = function(id) { return document.getElementById(id); };

function navROLL(elm,imgON,imgOFF)
{
$(elm).style.backgroundImage = ($(elm).style.backgroundImage == (imgON)) ? (imgOFF) : (imgON);
}

function FP_preloadImgs() 
{//v1.0
 var d=document,a=arguments; if(!d.FP_imgs) d.FP_imgs=new Array();
 for(var i=0; i<a.length; i++) { d.FP_imgs[i]=new Image; d.FP_imgs[i].src=a[i]; }
}

function FS_openBrWindow(theURL,winName,features)
{
  window.open(theURL,winName,features); 
  return false;
}
function chkNumeric(strString)
   {
   var strValidChars = "0123456789.-";
   var strChar;
   var blnResult = true;

   if (strString.length == 0) return false;
   for (i = 0; i < strString.length && blnResult == true; i++)
      {
      strChar = strString.charAt(i);
      if (strValidChars.indexOf(strChar) == -1)
         {
         blnResult = false;
         }
      }
   return blnResult;
   }