title: Cannot reset iframe.style.height successfully using jS on IE8
body: <p>I have the following piece of JavaScript code:</p>
  <pre><code>var urlpxExt = document.getElementById('urlPx');
  urlpxExt.style.height = &quot;200px&quot;;
  </code></pre>
  <p>This is very a general way to reset iframe style height, My problem is that the height of iframe 'urlPx' does not reset successfully on IE8,  The size of iframe does not changed on my view of IE screen, then I tried to alert <code>urlpxExt.style.height</code> after line <code>urlpxExt.style.height = &quot;200px&quot;</code>, it ouput the value which was not be changed.</p>
  <p>If I add some time-consuming process like alert before <code>urlpxExt.style.height = &quot;200px&quot;</code>. then it will reset value successfully.</p>
  <p>Anybody know why I got this happened? How to resolve?</p>