Select / unselect the checkboxes in search that are between the two checboxes.

Select / unselect the check boxes that are between the two checkbox.

On Search Result list :
The user can click on one check box in the list, hold down the Shift key, and select a second checkbox.
The JavaScript will then select / unselect the check boxes that are between the two check boxes.

################################

1. Logic to select / unselect checkboxes #
   ################################
   Last Action Current Status Result
   ( of the checkbox
   you selected )

Checked Checked Uncheck the all checkboxes between the two
Checked UnChecked Check the all checkboxes between the two
UnChecked Checked Uncheck the all checkboxes between the two
UnChecked UnChecked Check the all checkboxes between the two