jQuery Help for Simple Problem

I wrote a custom dropdown menu, the issue is that if you hover over it to quick it starts going up and down frantically. Here is an example: http://www.norrispenrose.com/

Here is my jQuery Code:

jQuery(document).ready(function(){ // menu system
      jQuery('#mainMenu li').hover(function() {
              jQuery(this).corner('5px');
          });

      jQuery('#mainMenu li').h开发者_C百科over(function() {
         if(jQuery(this).children().is('ul'))
          {
              jQuery(this).uncorner();
              jQuery(this).corner('top 5px');
              jQuery('ul', this).slideDown('fast');
              jQuery('ul', this).uncorner();
              jQuery('ul', this).corner('tr br bl 5px');
              jQuery(this).addClass('dropHover');
          }
          else
          {
      //Do nothing
      }

      }, function() {
          jQuery('ul', this).slideUp('fast');
          jQuery(this).delay(200).queue(function () {
              jQuery(this).removeClass('dropHover');
              jQuery(this).dequeue();
          });
          jQuery(this).uncorner();

      }); 
  });

Any help would be appreciated!

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Before your slideUp and slideDown use the jQuery stop() method (docs) to clear the animation queue. For example from your code:

jQuery('ul', this).stop(true, true).slideDown('fast');

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Have a look at the HoverIntent plug-in. That should solve your problem.