v2.0:		Initial release. Set to v2.0 as i have previously posted a similar solution.
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v2.1		Adds the ability to call a function after the tab has expanded. You can specify a shared function that will be called on every tab, and/or a function that is called on one specific tab. See the article for detailes: http://sharepointjavascript.wordpress.com/2011/03/12/tabs-for-sharepoint-forms-v2-0/
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v2.2		Updated the script to fix an issue with the attachments. They now appear at the bottom of every tab - like in a unmodified form. If there are no attachments, the field is hidden.
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v2.3		Fixed a bug regarding required people picker fields and tab highlighting.
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v2.4		Attempted to fix overlapping tabs in IE7.
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v2.5 BETA	Added support for "marking" tabs when they are visited. You need to add one property to the "tabConstructor" object under "settings" (below "baseTabColor"):
		visitedTabClass:'tabVisited'

		You then need to add this style tag to the top of your CEWP code:
		<style type="text/css">
		.tabVisited{
			background-image:url('/_layouts/images/cornerbrtl.gif');
			background-position:left top;
			background-repeat:no-repeat;
		}
		</style>