bgcolor vs background-color vs backgroundColor
<p>I'm trying to make a "strobe light" for the heck of it in javascript and I found some code that would do it for me on the internet...but they used bgcolor and I felt that I should be proper but the code only works if I leave it bgcolor...so you know what I mean here's the original:</p>

<pre><code>&lt;html&gt;&lt;head&gt;
&lt;title&gt;Strobe&lt;/title&gt;

&lt;script&gt;

function toggleBgColor()
{
  document.bgColor = document.bgColor == '#ffffff' ? '#000000' : '#ffffff';

  setTimeout('toggleBgColor()', 70); //in milliseconds
}
&lt;/script&gt;
&lt;/head&gt;

&lt;body onLoad='toggleBgColor();'&gt;
&lt;/body&gt;&lt;/html&gt;
</code></pre>

<p><br><br></p>

<p>and Here's my changes:
<br><br><br></p>

<pre><code>&lt;html&gt;&lt;head&gt;
&lt;title&gt;Strobe&lt;/title&gt;

&lt;script&gt;

function toggleBgColor()
{
  document.body.style.background-color = document.body.style.background-color == '#ffffff' ? '#000000' : '#ffffff';

  setTimeout('toggleBgColor()', 70); //in milliseconds
}
&lt;/script&gt;
&lt;/head&gt;

&lt;body onLoad='toggleBgColor();'&gt;
&lt;/body&gt;&lt;/html&gt;
</code></pre>

<p><br><br>
I've also tried changing the document.body.style.background-color to document.body.style.background and document.body.style.backgroundColor ...None of them work...what am I doing wrong?</p>
