Databases
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    <p>What if you use document.querySelector:</p> <pre><code>&lt;td onmouseover="document.querySelector('.textbox').innerHTML='Hidden text'" onmouseout="document.querySelector('.textbox').innerHTML='Show text'"&gt; &lt;div class="textbox"&gt;Show text&lt;/div&gt; &lt;/td&gt; </code></pre> <p>This one works I think.</p> <p>There is something else that you should have in mind. Adding such things inside your html is not really good idea. That's because every time you are executing something. It will be good to cache the result of document.querySelector or document.getElementsByClassName. Imagine what will happen if you have 1000 rows inside your table. Here is a jsfiddle showing how you can improve the performance of the code <a href="http://jsfiddle.net/krasimir/Zbgng/2/" rel="nofollow">http://jsfiddle.net/krasimir/Zbgng/2/</a></p> <p>HTML</p> <pre><code>&lt;table&gt;&lt;tr&gt; &lt;td class="table-column"&gt; column1 &lt;/td&gt; &lt;td class="table-column"&gt; column2 &lt;/td&gt; &lt;td class="table-column"&gt; column3 &lt;/td&gt; &lt;/tr&gt;&lt;/table&gt; &lt;div class="textbox"&gt;Show text&lt;/div&gt; &lt;div class="textbox"&gt;Show text&lt;/div&gt; &lt;div class="textbox"&gt;Show text&lt;/div&gt; </code></pre> <p>JS</p> <pre><code>var columns = document.querySelectorAll(".table-column"); var textboxes = document.querySelectorAll(".textbox"); for(var i=0; column=columns[i]; i++) { column.addEventListener("mouseover", function() { replaceText("Hidden text"); }); column.addEventListener("mouseout", function() { replaceText("Show text"); }); } var replaceText = function(str) { for(var i=0; field=textboxes[i]; i++) { field.innerHTML = str; } } </code></pre>
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    1. POinnerHTML with getElementByClassName doesn't work
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    1. CODoes it works in IE8? I need something to work in IE8 and other (newer) browsers.
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    2. COI'm not able to test it right now, but the most critical part is querySelectorAll, which is supported by IE8 -> http://caniuse.com/queryselector So, it should work. It is supported in all the browsers nowadays.
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    3. COThis one doesn't work in IE8. Tested it right now via jsfiddle iFrame.
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

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