Regular Expressions

Pattern:

http://developer.mozilla.org/en/docs/Core_JavaScript_1.5_Guide:Writing_a_Regular_Expression_Pattern

http://macromates.com/textmate/manual/regular_expressions

http://www.webreference.com/js/column5/modifiers.html

http://www.javascriptkit.com/javatutors/redev.shtml

These sites contains the important regular expression pattern we would possibly use.