If you'd like to change the appearance of the output of your site, execute javascript functions, see javascript errors,.., you can use a plug-in called Firebug for the Firefox Browser. Firebug offers an easy way to access your template's style sheets and javascript. Check out their site at getfirebug.com, there is a tutorial on their website for each feature. and watch the video tutorial below on how to use the Firebug plug in for your Joomla! site.

There is also an extremely excellent article in the Joomla! Community Magazine that discusses how to use Firebug to tweek Template CSS.

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