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       <b><font size=+2>Supports system</font></b>

	<p>The supports system makes it possible to use features that are only
supported by a few browsers and still be compatible with all browsers.
This is done through a database of capabilities supported by the
different browsers. The <tt>&lt;if&gt;</tt> tag is then used on the pages to
make versions that use different browser capabilities.

<p>Pages are not customized for a certain browser, but rather for
browsers that support different features. When a new browser is
released, all that is necessary is to determine what features it
supports. Once that has been done, and the database updated, all pages
using the support system will work with it.

<p>Some features might work to a lesser degree on some browsers. Old
versions of the Macintosh version of Netscape supports JavaScripts,
but some JavaScripts make the Netscape browser hang. If you have such
JavaScripts, you would probably want the support system to make sure
they are not sent to that version of Netscape. On the other hand, if
you have less complicated JavaScripts you will probably want to send
them.

<p>To make the supports system work for you, you might need to tweak
it yourself. This can be done by the Challenger administrator by
changing the <i>Global Variables/Client supports regexps</i> variable (you will have
to choose <i>more options</i> to see it).

<p>Since new browsers get released all the time, updated versions of
the supports database are by default fetched regularly from <a
href=http://www.roxen.com/>www.roxen.com</a>.


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