"Doesn't support" could mean a few different things. Fortunately, most browsers will support it if javascript is enabled, so the question becomes one more of "What happens if a user doesn't have javascript enabled?". In that case (as configured in the demo) not much will happen. That is because the links without javascript are set to href="#", which is HTML for "reload this page at the top". So that is what will happen. You can and should configure those links to point to a page with conventional links to the content. This could be a page you already have on your site or one that you can make just for this purpose. Here is an example (modified from the demo):
Code:
<a href="webmaster_menu.htm" onMouseover="showmenu(event,linkset[0])" onMouseout="delayhidemenu()">Webmaster Links</a><br>
<a href="news_menu.htm" onMouseover="showmenu(event,linkset[1], '180px')" onMouseout="delayhidemenu()">News sites</a>
Those red links were just "#" in the original demo. Now they point to alternate menu pages, on these pages can be conventional links for those same items that would have popped up if the user had javascript enabled. If the user has javascript enabled, these red links will not fire but, simply reveal the pop it menu onmouseover.
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