NAME

       wml::des::preload - Preload Images

SYNOPSIS

        #use wml::des::preload

        <preload src=<image filename> via=<trick>>

DESCRIPTION

       This include file provides the "<preload>" tag which can be used to preload images. Such
       preloading is usually done to speedup access for following pages. Currently there are only
       a few tricks how this can be done.

       The following combinations are currently supported:

       "src="anyimage "via=size"
           Preloads the image anyimage by using an "<img>" tag with the attributes "width=1
           height=1" which leads to the loading of the image but only to a 1 pixel in display.

           Advantage: Works for all browsers.

           Disadvantage: This approach has the nasty side-effect of an occuring 1 pixel in
           display because "width=0 height=0" does not work as expected in most browsers
           (especially in Netscape 4.x). So, position your "<preload>" tag somewhere it does not
           destroy the look and feel of your page.

       "src="anyimage "via=js"
           Preloads the image anyimage by using a JavaScript snippet which loads the image by
           declaring an unused "Image" object.

           Advantage: Silently preloads the image without displaying anything.

           Disadvantage: Only works for browsers with a JavaScript implementation and only for
           those who support the "Image" object (currently NS/3, NS/4, IE/4).

AUTHORS

        Ralf S. Engelschall
        rse@engelschall.com
        www.engelschall.com

        Denis Barbier
        barbier@engelschall.com

REQUIRES

        Internal: P1, P2
        External: --

SEE ALSO

       wml::std::tags(3) HTML 3.2 "<img>" tag.