title: Javascript function to change button colour
body: <p>Can someone show me whats wrong with this:</p>
  
  <pre><code>&lt;html&gt;
  
      &lt;script type = "text/javascript"&gt;
          function colourGreen()
          {
              document.getElementById("button1").style.bgColor = 0xFFFF00;
          }
      &lt;/script&gt;
      &lt;body&gt;
  
          &lt;form action=""&gt;
              &lt;div id = "button1"&gt;
                  &lt;input type="button" value="Colour"&gt;
              &lt;/div id&gt;
              &lt;div id = "button2"&gt;
                  &lt;input type="button" value="Price up" onclick = "colourGreen()"&gt;
              &lt;/div id&gt;
              &lt;div id = "button3"&gt;
                  &lt;input type="button" value="Price down"&gt;
              &lt;/div id&gt;
          &lt;/form&gt;
  
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>