Finish one animation then start the other one

Question

I have two divs and two separate links that triggers slideDown and slideUp for the divs.

When one of the divs are slided down and I click the other one, I hide the f

Answer 1

$('#Div1').slideDown('fast', function(){
    $('#Div2').slideUp('fast');
});

Edit: Have you checked out the accordion plugin (if that's what you're trying to do)?