960 Gridder is an excellent tool for any web developer/ designer that wants to easily align, match and/or lay out websites.
960 Gridder is cross-browser compliant and works well in Internet Explorer 6/7/8, Firefox 2/3 and Chrome. Safari 4 Beta and Opera 9 is also working as expected and it should work in Safari 2.x-3.x also.
It injects your website of choice and you can then work with this tool to help you out with whichever layout/design task you find it useful for.
By default, it is set to work with 12 columns, 60 pixel wide columns with a 10 pixel spacer left and right of the column, making it a 20 pixel wide gutter (which actually is the ones this gridder renders).
use the code below to automatically enable the grid on your website.