I am using some pre-written JavaScript from polldaddy.
They have a JavaScript option which, when you click on the link, the survey pops up as an overlay to my site.
However, I would like when people come to the site, the overlay comes up on its own without needing to click on the link.
Here is the JavaScript:
<script language="javascript" type="text/javascript">
var PDF_surveyID = 'F1B4CE39FE1ECE86';
var PDF_openText = 'View Survey';
</script>
<script type="text/javascript" language="javascript" src="http://www.polldaddy.com/s.js"></script>
<noscript><a href="http://surveys.polldaddy.com/s/F1B4CE39FE1ECE86/">View Survey</a></noscript>