jQuery Forum

Pretty much the only thing that has changed is the use of the attr() method.

There should be virtually no problems running your examples from 1.4, as Chrazy said there was a modification to the attr() method, but in many circumstances it still runs on same code

You can easily get almost all versions of jQuery from Google CDN which doesn't require downloading, simply changing the SRC slightly in a script tag.

This will help you realize it isn't version that is failing

<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.6/jquery.min.js"></script>

Just change version number and stick it in a page

Posting some examples of failing code would also help

This script breaks using jquery/1.6 weather accessed locally or over the internet.
the error:  uncaught exception: Syntax error, unrecognized expression: [href=wide.css]

Line 0

1.  $(document).ready(function() {
2.     stylesheetToggle();
3.     $(window).resize(stylesheetToggle);
4. });
5. function stylesheetToggle() {
6.     if ($('body').width() > 900) {
7.         $('<link rel="stylesheet" href="wide.css" type="text/css" />').appendTo ('head');
8.     }else{
9.         $('link[href=wide.css]').remove();
10.     }
11. }

hmm... try 'link[href="wide.css"]'

It worked!!!  thanks.