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    <p>This might give you a nice starting point: <strong><a href="http://jsfiddle.net/WYhNm/2/" rel="nofollow">Fiddle</a></strong></p> <p>Add a <code>step</code> class to each of your form elements (I do believe for this to work they need to be each other's siblings):</p> <pre><code>&lt;form class="step-by-step"&gt; &lt;!-- Start with only the first one enabled --&gt; &lt;input type="text" class="step" id="step1" /&gt; &lt;input type="text" class="step" id="step2" disabled /&gt; &lt;input type="text" class="step" id="step3" disabled /&gt; &lt;!-- Also works with selects, as long as you keep track of IDs --&gt; &lt;select id="step4" class="step" disabled&gt; &lt;option value=""&gt;Choose one&lt;/option&gt; &lt;option value="volvo"&gt;Volvo&lt;/option&gt; &lt;option value="saab"&gt;Saab&lt;/option&gt; &lt;option value="mercedes"&gt;Mercedes&lt;/option&gt; &lt;option value="audi"&gt;Audi&lt;/option&gt; &lt;/select&gt; &lt;select id="step5" class="step" disabled&gt; &lt;option value=""&gt;Choose one&lt;/option&gt; &lt;option value="europe"&gt;Europe&lt;/option&gt; &lt;option value="america"&gt;America&lt;/option&gt; &lt;/select&gt; &lt;/form&gt; </code></pre> <p>Then, use the <code>next()</code> function to find the next step in the form when something changes, and either disable or enable it (or all next steps, if the element was empty):</p> <pre><code>// The change event is fired when a form element loses focus // and its value has changed since the last time we interacted with it $('.step').change(function() { var next_step = $(this).next('.step'); var all_next_steps = $(this).nextAll('.step'); // If the element *has* a value if ($(this).val()) { // Should also perform validation here next_step.attr('disabled', false); } // If the element doesn't have a value else { // Clear the value of all next steps and disable all_next_steps.val(''); all_next_steps.attr('disabled', true); } }); </code></pre> <p>For TAB functionality, the following is a quick fix, which I'm sure can be somehow integrated with the above function.</p> <pre><code>$('.step').keydown(function(event) { // If they pressed tab AND the input has a (valid) value if ($(this).val() &amp;&amp; event.keyCode == 9) { $(this).next('.step').attr('disabled', false); } }); </code></pre>
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    1. COThanks @Elise, that has been very helpful and exactly what I'm looking for. Thanks so much! Dennis
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