title: Why is my flash banner causing css issues?
body: <p>I have a flash banner ad that's being shown on a website as an ad at the bottom of the page. When the banner ad appears the scroll bar disappears. The following css is added to the page when the flash banner is present:</p>
  
  <pre><code>body {margin: 0; padding: 0; overflow: hidden;}
  </code></pre>
  
  <p>The "overflow: hidden" is causing the scroll bar issue, but I have no idea where it's coming from. </p>
  
  <p>Is there any way a flash banner could affect the css on the page? </p>