MAIN JQUERY WEBSITE
http://www.jquery.com

jquery API
http://api.jquery.com/

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WHER TO FIND JQUERY PLUGINS
jQuery Plugin Repository
http://plugins.jquery.com

Google Code
http://code.google.com

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LIBRARY OF REGULAR EXPRESSIONS
www.regexlib.com
http://www.regexlib.com/CheatSheet.aspx

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LIGHTBOX PLUGIN
http://leandrovieira.com/projects/jquery/lightbox/

lightbox 2: 
http://www.huddletogether.com/projects/lightbox2/

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CYCLE PLUGIN
http://www.malsup.com/jquery/cycle/download.html

top 10 lightbox script
http://line25.com/articles/rounding-up-the-top-10-jquery-lightbox-scripts

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GREY BOX
see jquery library

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DROPDOWN MENUS
superfish plugin
http://users.tpg.com.au/j_birch/plugins/superfish/

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DATE PICKER PLUGIN
http://marcgrabanski.com/article/jquery-ui-datepicker

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GENERAL JQUERY, AJAX, HTML5
http://marcgrabanski.com/