Jquery Version conflict

I am trying to use the Nivo JQuery Slider (http://nivo.dev7studios.com/) and a Scrollable Gallery (http://flowplayer.org/tools/demos/scrollable/index.html). Now I have run into a problem, basically the Nivo Slider uses this JQuery Library: <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> and the Scrollable Gallery uses this one: <script src="http://cdn.jquerytools.org/1.2.5/full/jquery.tools.min.js"></script> When both are enabled, only the thumbnail gallery works (because it's script import is done after the nivo's), when the 1.42 version is enabled only the Nivo works, and when only the 1.2.5 version is enabled only the Scrollable Gallery Works. What should I do? Solution: up vote 5 down vote accepted use this solution if you cannot use a single jQuery file for both the plugins: <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script> <script type="text/javascript">   var jQuery_1_4_2 = jQuery.noConflict(); </script> <script src="http://cdn.jquerytools.org/1.2.5/full/jquery.tools.min.js"></script> To use jQuery 1.4.2, put the code using it in a SEF (Self Executing Function) like this: (function($){    //code using jQuery 1.4.2    //here the $variable will be the jQuery object of 1.4.2 })(jQuery_1_4_2) For jQuery 1.2.5, you can use $ variable directly. UPDATE: Based on your comment, following is the way to use it. If you want to use jQuery 1.4.2, use jQuery_1_4_2 object For example: jQuery_1_4_2("#abc").slider(options) If you want to use jQuery 1.2.5 use $ or jQuery object For example: $("#abc").scrollable(options) Source: http://stackoverflow.com/questions/6332111/jquery-version-conflict