Hello, I am trying to setup a simple "If Else" statement to display a certain div based on a string in the URL.

So if the url is domain.com/source1 display only source1 div
If the url is domain.com/source2 display only source2 div

This is what I have tried to at least show or hide based on one source.. haven't gotten to multiples yet!

Code JavaScript:
<script type="text/javascript">
if(document.URL.indexOf("source1") >= 0){
    document.getElementById('source1').style.display = "block";
} else 
    document.getElementById('source1').style.display = "none";

This is the HTML
Code HTML4Strict:
<style type="text/css">
 .show {display: block; }
<div id="source1" class="show">content for source one div....

Thank you very much in advance for any help you can provide. I have carefully searched this and many other forums to find an answer.