v2.2		Redone the script when i ported it to SP2010. Read the details her:
		http://sharepointjavascript.wordpress.com/2011/09/12/preview-metadata-in-list-view-on-mouseover-updated-version
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v2.3		Added some new festures, see this article for details:
		http://sharepointjavascript.wordpress.com/2011/09/12/preview-metadata-in-list-view-on-mouseover-updated-version