[jQuery] slideUp submenu before loading a new page (it won't wait)

[Rob_]

Hi again  :-)

$("dt a").click(function() {
      $("dd:visible").slideUp(600);
   });

If I want to quickly slideUp a submenu before I load a new page, there
is no visible slideUp and the page loads immediately...

How can I get it to wait and view the slideUp first, please?

Thanks!