Image preloading

ChaosKnight
2010-04-10T16:32:21Z

Hi, I am still very new to Ruby on Rails, but I''m busy with my first
RoR website, everything went well, until I realized that my images
didn''t preload... On previous websites I used a simple JavaScript
preloader that seemed to work very well:

    function preloadImages() {
      if (document.images) {
        var imgFiles = preloadImages.arguments;
        var preloadArray = new Array();
        for (var i=0; i < imgFiles.length; i++) {
          preloadArray[i] = new Image;
          preloadArray[i].src = imgFiles[i];
       }
     }
   }

And I called it from within the HTML:

    <body
onload="preloadImages(''/images/home.png'',....etc....)

This is how I called the image rollover in the Rails code:
    <%= link_to(image_tag(''home.png'',
:mouseover=>"home_ro.png"), ''/'',
{:controller=>''home'',
:action=>''index''}) %>

Can anyone please tell me why this didn''t work? I also heard that
Prototype has it''s own built-in image preloader, is this true?

Thanks I really appreciate your help!