Microsoft: http://aspnet.codeplex.com/releases/view/40584
Google: http://code.google.com/p/minify/ ; http://code.google.com/closure/
Some online ones that takes a block of javascript:
http://jscompress.com/
http://www.minifyjavascript.com/
If you need to use JavaScript to do a Check All on all the checkboxes in the column, be sure to use this guy's code: http://www.highoncoding.com... If your code simply change the state (...checked == true), it does not get registered and does not get passed into the code behind. Instead, follow AzamSharp's article and make sure you initiate a click() event ......