Having Trouble Adding Custom Form to Popup

I am trying to add a tour package booking form to the popup using icegram. I have used the code below as provided on the website of affiliate program I have registered to. However when I add this code in a campaign and previews it, nothing shows up. Please tell me what am I doing wrong.

<script type="text/javascript">
form_format='4';
form_title='Are you Planning your Trip?';
form_subtitle='Get Quotes to compare';
form_width='450px';
form_lang='en';
form_bgcolor='#FFF1CA';
form_bordercolor='#DDCB9E';
form_fontcolor='#000000';
form_headbg='#A57000';
form_headtext='#FFFFFF';
form_fontfamily='Verdana';
form_typeid='';
form_leadtype='Tour';
form_afid='15033';
form_redirect='';
</script>
<script type="text/javascript" SRC="http://www.hellotravel.com/serveform/serveform.js"></script>