the new version will display immediately. These two lines handle the precaching for you. As long as you refer to those images by the names of the image objects that JavaScript recognizes ...

Two image objects are needed because two different images are displayed per rollover: the on version and the off ... for supports image manipulation via JavaScript (that is, Netscape 3 or later ...

Yes, GoogleBot is able to execute JavaScript, but is GoogleImageBot ... image - but the thumbnail is not just a smaller version of the larger image. I use the same exact image file for the anchor ...

When the DOM is ready, javascript replaces those links with links to optimized gallery pages. Around July-August, full version images started dropping from Google Images results.