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    <p>As previously reported, there is a closing parenthesis missing at the end of the first handler.</p> <p>Inside your handlers, you should use <code>$(this)</code> which references to the element that fired the event rather than <em>all divs of the document</em>:</p> <pre><code>$(document.ready(function(){ $('div').mouseover(function(){ $(this).slideDown('slow'); }); $('div').mouseout(function(){ $(this).slideUp('slow'); }); }); </code></pre> <p>I also recommend that you handle a more specific selector than <code>div</code>... with such a confusing selector you reduce your page to a "cannot change anything"-state. With a markup like this:</p> <pre><code>&lt;div class="hover-effect"&gt; &lt;!-- content --&gt; &lt;/div&gt; </code></pre> <p>You could have something like this:</p> <pre><code>$('.hover-effect').mouseover(/* ... */); $('.hover-effect').mouseout(/* ... */); </code></pre> <hr> <p><strong>UPDATE:</strong></p> <p>According to the jsfiddle you provided, you are basically trying to handle the mouseover event on a div that isn't displayed. Your code works exactly as expected. If you play baseball, you will surely have an epic time trying to hit the ball while it hasn't been thrown yet.</p> <p>First, you need a container that will always have some width and height. One way to ensure this can be to set a top padding to the container. Inside that container, your slider can slide as you wish without reaching the "nothing"-state. For the benefits of a free pointer effect, I assumed that it is intended to be displayed as a link.</p> <p>Try this:</p> <p><strong>HTML</strong></p> <pre><code>&lt;a class="slider-container" href="#"&gt; &lt;div class="slider"&gt;&lt;/div&gt; &lt;/a&gt; </code></pre> <p><strong>CSS</strong></p> <pre><code>.slider-container { display:block; width:100px; padding-top:25px; background-color:#000000; } .slider { width: 100px; height: 100px; background-color:#000000; display:none; } </code></pre> <p><strong>JQUERY</strong></p> <pre><code>$(document).ready(function(){ var $slider_container=$('.slider-container'); $slider_container.mouseover(function(){ $('.slider',this).stop().slideDown('slow'); }); $slider_container.mouseout(function(){ $('.slider',this).stop().slideUp("slow"); }); }); </code></pre> <p>Take a look at this working <a href="http://jsfiddle.net/4CdFP/11/" rel="nofollow">FIDDLE</a></p>
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    1. POjQuery assistance needed with mouseover() and slideDown
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    1. USFrederik.L
    1. USFrederik.L
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    1. POjQuery assistance needed with mouseover() and slideDown
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    1. COYou are welcome! :-)
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    2. CO@ak34_ What happends is that to fire a mouse event, an element must have a displayable size in which the engine can calculate whether the cursor position fits in. If the container has no height, scrolling the inner div up will lead to the same problem. If the container has a specific height, it is not clear which behavior is wanted when setting a bigger height to the inner. IE will more likely take bad decisions. The padding was a workaround to ensure it has a minimum height without restricting it.
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