stop page from jumping to the top?

stop page from jumping to the top?

Hello,

i've made a menu for my website and i've used to jQuery to create a sub menu on the 'about' section.

the problem is when you click the button, the page jumps to the top.. which i don't want it to do. is there a way round this?

here's the javascript i'm using:

  1. $(document).ready(function () {
        $('li.aboutb').click(function () {
            $('ul#aboutsub').slideToggle('medium');
        });
    });





here's a link to the page in question: click me

Thanks in advance.

Max