title: Button fires event after textbox was entered
body: <p>I have a htmlpage with three inputfields and a button. It looks like this: </p>
  
  <p>i don't think it will help, but anyhow:</p>
  
  <pre><code>  &lt;table&gt;
          &lt;tr&gt;
              &lt;td&gt;Start:&lt;/td&gt;
              &lt;td&gt;&lt;input ID="txtStart" type="text" /&gt;&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;td&gt;Eind:&lt;/td&gt;
              &lt;td&gt;&lt;input ID="txtEind" type="text" /&gt;&lt;/td&gt;
          &lt;/tr&gt;
          &lt;tr&gt;
              &lt;td&gt;&amp;nbsp;&lt;/td&gt;
              &lt;td&gt;&lt;input type="submit" onclick="javascript:alert('test');"/&gt;&lt;/td&gt;
          &lt;/tr&gt;
      &lt;/table&gt;
  
      &lt;table&gt;
          &lt;tr&gt;
              &lt;td&gt;Station:&lt;/td&gt;
              &lt;td&gt;&lt;input ID="txtStation" type="text" /&gt;&lt;/td&gt;
          &lt;/tr&gt;
      &lt;/table&gt;
  </code></pre>
  
  <p>If i enter text in textbox 3 and i press enter,  then button 1 fires an event(javascript:alert("this is a test");). How can i disable this? The button should only fire an event when i click it. It should not be related to textbox 3... </p>
  
  <p>I think it has something to with postback or something? Or maybe a defaultbutton? </p>
  
  <p>Any help welcome :) </p>