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    <p>I assume you meant to write <code>mouseout</code> on the second mouse event.</p> <p>This bit of script will work if you always keep the <code>SpriteN</code> class name last in the list.</p> <pre><code> $(".MenuItem").mouseover(function() { var $this = $(this); // Get current class names and append 'Dis'. $this.attr('class', $this.attr('class') + "Dis"); }); $(".MenuItem").mouseout(function() { var $this = $(this); // Get current class names and remove 'Dis'. $this.attr('class', $this.attr('class').replace('Dis', '')); }); </code></pre> <p>Although it looks to me that all you want is a hover effect. Why not use the pseudo-class <code>:hover</code> like this:</p> <pre><code>.Sprite1:hover { } .Sprite2:hover { } </code></pre> <p>It won't work in IE6 as it's on a <code>div</code> element, which might be why you want to use jQuery. </p> <p><strong>Edit to clarify how it works</strong></p> <p><em>Mouse over:</em><br> First I get the value of the class attribute with <code>$this.attr('class')</code> which will return a string of <code>MenuItem Sprite1</code>. If you append this string with 'Dis' you get <code>MenuItem Sprite1Dis</code>. And that is exactly what you wanted. Now I put this string back to the <code>class</code> attribute and we're ready.</p> <pre><code>$this.attr('class', $this.attr('class') + "Dis"); </code></pre> <p><em>Mouse out:</em><br> Like previous event we retrieve the current class attribute value by <code>$this.attr('class')</code>, and it returns <code>MenuItem Sprite1Dis</code> like expected. What we want to do is remove the Dis part of the string. We can do that by doing a simple <code>replace</code> of 'Dis' to '' (nothing).</p> <pre><code>$this.attr('class', $this.attr('class').replace('Dis', '')); </code></pre>
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    1. PORemove second class from an element and add another class
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    1. COBut I have two classes on the element.
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    2. COAnd I only want to append Dis to one of the class names.
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      1. USrahul
    3. COYou should try it out and see! I'll edit my post to clarify how it works.
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