function replace(string,text,by) {
// Replaces text with by in string
    var strLength = string.length, txtLength = text.length;    
    if ((strLength == 0) || (txtLength == 0)) return string;

    var i = string.indexOf(text);
    
    if ((!i) && (text != string.substring(0,txtLength))) return string;
    if (i == -1) return string;

    var newstr = string.substring(0,i) + by;

    if (i+txtLength < strLength)
        newstr += replace(string.substring(i+txtLength,strLength),text,by);

    return newstr;
}

function openHelp(contentURL)
{
   var windowWidth  = 600;
   var windowHeight = 400;
   var windowXPos = 0;
   var windowYPos = 0;
   var scrollWidth = 0;

   if (document.layers)
   {
      if (window.scrollbars.visible) scrollWidth = 20;

      windowXPos = window.screenX + (window.outerWidth / 2) - (windowWidth / 2);
      windowYPos = window.screenY + (window.outerHeight / 2) - (windowHeight / 2);
   }
   else if (document.all)
   {
      windowXPos = (screen.width / 2) - (windowWidth / 2);
      windowYPos = (screen.height / 2) - (windowHeight / 2);
   }

   var windowDetails = 'toolbar=yes,status=yes,menubar=no,width='+windowWidth+',height='+windowHeight+',scrollbars=no,screenX='+windowXPos+',screenY='+windowYPos+',top='+windowYPos+',left='+windowXPos

   if (! contentURL)
      contentURL = '/help/contents/welcome.html';

   // Replace '#' characters with '~' characters to mask
   contentURL = replace(contentURL,'#','~');
   
   helpWindow = window.open('/help/index.cfm?SRC='+contentURL,'HelpWindow9',windowDetails);
   
   if (helpWindow) helpWindow.focus();
}