Adding data from dropdown to a string
<p>I have a URL with query string <br/>
(example: <a href="http://www.example.com/?page=index&amp;opr=sales-current&amp;pageno=1" rel="nofollow">http://www.example.com/?page=index&amp;opr=sales-current&amp;pageno=1</a>)<br/></p>

<p>I need to change "opr" value from "sales-current" to "sales-[dropdown value]" using javascript or jQuery</p>

<p>Thanks</p>
