If you are writing the code of that script into every page, and would like it to be 1 file that all pages reference instead, copy all of the info between that particular javascript's <script></script> tags in the <head> and paste it into a new javascript file in DW. Save the new .js file as "quote.js".
Change the <script> tags to this...
<script type="text/javascript" src="../pathtoyour/script/quote.js"></script>
Make sure the src path is to your new quote.js file.
That should do it.
