i am not very good in jQuery but here is a code that i use for my news,links and menus
sorry if my english is bad
function showElement(id) {
var element = $('#showElement-'+id);
if(element.css('display')=='none'){
element.slideDown('fast').css('display','block');
}
else {
element.slideUp('fast').hide().css('display','block');
}
}