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copied!<p>I would try something along the lines of:</p> <pre><code><select name="milestone_tag" id="milestone_tag"> <option value="1" class="a">Selection A</option> <option value="2" class="b">Selection B</option> <option value="3" class="a-b">Selection C</option> <option value="4" class="a">Selection D</option> </select> <div id="a" class="milestone"> <input name="milestone_a" value="milestone a" /> </div> <div id="b" class="milestone"> <input name="milestone_b" value="milestone b" /> </div> <div id="a-b" class="milestone"> <input name="milestone_a" value="milestone a" /> <input name="milestone_b" value="milestone b" /> </div> $(document).ready(function(){ var $milestones = $(".milestone"), $selector = $('#milestone_tag'); $selector.change(function() { var selected = $selector.find('option:selected').attr('class'); $milestones.hide(); $('#' + selected + '.milestone').show(); }); }); </code></pre> <p><a href="http://jsfiddle.net/userdude/ScWVZ/1/" rel="nofollow">http://jsfiddle.net/userdude/ScWVZ/1/</a></p> <p>A slightly more "complex" example that first tests and creates a local data value with the relevant <code>id</code> selectors, comma-separated, the is then used to display the related elements. Note the use of a (non-existent) <code>c</code>, and that <code>a</code> and <code>b</code> are not duplicate for the <code>a-b</code> case.</p> <p><a href="http://jsfiddle.net/userdude/ScWVZ/3/" rel="nofollow">http://jsfiddle.net/userdude/ScWVZ/3/</a></p>

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