function newImage(arg) {
  if (document.images) {
    rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}
function changeImages() {
  if (document.images && (preloadFlag == true)) {
    for (var i=0; i<changeImages.arguments.length; i+=2) {
      document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}
function externalLinks()
{
  if(!document.getElementsByTagName) return false;
  var links = document.getElementsByTagName("a");
  for(var i = links.length - 1; i > -1; i--)
  {
    if(links[i].getAttribute("href") && links[i].getAttribute("rel") == "external")
      links[i].target ="_blank";
  }
}
window.onload = function() {
  externalLinks();
  prepareGallery();
  }