Browser support
Like jQuery itself, this version of jQuery UI officially supports the current and the previous version of a browser, although the library works fine with older versions of major browsers, including the following: IE7+, Firefox 2+, Opera 9+, Safari 3+, and Chrome 1+.
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Support for IE6 and IE7
As mentioned earlier, the jQuery UI team has dropped support for IE6 in UI 1.10; you can still use jQuery UI though, by downloading the legacy Version 1.9.2. Users of IE7 may note that there are plans to drop support for this browser too; at the time of writing, this is currently scheduled for Version 1.11, although this is yet to be confirmed.
The widgets are built from semantically correct HTML elements generated as needed by the components. Therefore, we won't see excessive or unnecessary elements being created or used.
