Jquery Issue

Jquery Issue

I have content (done in jquery) that gets added to a website (anyone on the web, which means I have no way of knowing what they are using).  I started with doing a jquery check to see if jquery needed to be installed, but found that my content needed a new version, which others didn't have installed on their site.  I am now trying to figure how to go about allowing multiple versions of jquery on a site...

so their site could have <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.1/jquery.min.js" >

and my content needs 

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js">

is there a way to say something like want to have no conflict - add this script (so both versions of jquery are running)??

Thanks in advance.