The following is a common layout you would see in an email client (I.e. Gmail).
Click a checkbox and then while holding Shift clicks another checkbox a few rows down, all the checkboxes inbetween those two checkboxes will be checked.
This is an inbox layout.
Check one item
Hold down your Shift key
Check a lower item
Everything inbetween should also be set to checked
Try do it with out any libraries
Just regular JavaScript
Good Luck!
Don't forget to tweet your result!