html - slidedown menu, synchronise sliding content jquery -

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hi have built simple slide down menu jquery , can found @ http://testsiteproject.bugs3.com/

my question rises when click on grey top button, want black button follow down menu instead of appearing after div has slided down. there way achieve this?

<div id="topmenu"> <div id="top-top"></div> <a href='javascript:slidemenuup();'> <div id="top-bottom"></div> </a> </div>

i should slide down "topmenu" includes both "top-top" , "top-bottom". slides "top-top".

function slidemenu(){     if ($("#topmenu").is(":hidden")) {         $("#topmenu").slidedown("slow");     } else {         $("#topmenu").hide();     } }

what if try positioning whole #topmenu div off screen (with negative top value), animating on top property instead of slidedown.

a quick mockup of mean:

fiddle:
http://jsfiddle.net/vleyf/

js:

$("#topmenu").animate({top: 0}, "slow");

then here can animate whatever top property had before etc. however, looking @ spokey's answer, you'll still need part of (switch #top-bottom position:absolute position:relative).


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