Your question is very vague, but hopefully this example will get you started in the right direction: http://jsfiddle.net/3mJ3z/
Basically, there are 3 menu items, and 3 corresponding content items. When you click the menu item, all the other content items disappears and the corresponding content item fades in. The HTML:
<div class="item-1 content-item">
I am the content for item 1
</div>
<div class="item-2 content-item" style="display: none;">
I am the content for item 2
</div>
<div class="item-3 content-item" style="display: none;">
I am the content for item 3
</div>
<ul>
<li class="change-item" data-item="1">Item 1</li>
<li class="change-item" data-item="2">Item 1</li>
<li class="change-item" data-item="3">Item 1</li>
</ul>
The JS:
$('.change-item').click(function(){
var this_item = $(this).attr("data-item");
$('.content-item').hide();
$('.item-' + this_item).fadeIn();
});
2
solved Fade out/in sperate divs with button click [closed]