New JS Vertical Menu Up - Set The Menu To Automatically Expand On Mouse Rollover Instead Of Click?

How can I set the menu to automatically expand on mouse rollover instead of click? Here is the code as it stands right now:

$(document).ready(function () {
$('img.menu_class').click(function () {
$('ul.the_menu').slideToggle('medium');
});
});

Second Question: For some reason, the menu is appearing behind a table row when it expands, thus hiding a good portion of the menu. Here it is: [URL]

Try clicking on 'Products & Services', and then clicking on "Centerfire Rifle Suppressors" from the dropdown menu. When it takes you to that category page, click the menu again and you will see that the menu hides behind the <h1> table row.