Creating a shift-click type feature to a web page GridView Control

I have a gridview control inside an ascx page.  In this gridview control are several columns and rows, and based on permissions and settings, may or may not be selectable.

What I would like to do is, IF the column is selectable (boolean value to determine), have a way for the end user to do a "shift-click" feature that will select all items between the first item selected and the last item selected in the grid.  This gridview can have anywhere from 10-1000 rows per page, and as many pages as needed.

I know that somewhere in the javascript code is a client side click event because the column is a templated image item and will change its image based on if its selected or not.

What would be the easiest way to accomplish this?  I can do code behind, or javascript, it doesn't matter to me.

Thanks in advance for your assistance!
ericlockshineDirector of ITAsked:
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go into windows and go to set program defaults or set key macros...easist way to do this
ericlockshineDirector of ITAuthor Commented:
I'm talking about a web page, and it is not necessarily in windows (it could be anything).
ericlockshineDirector of ITAuthor Commented:
I am going to ask this to be closed.  I figured out how to get this done.  
ericlockshineDirector of ITAuthor Commented:
Using Javascript, I was able to determine the shiftkey status and was able to toggle between checked/unchecked through script.

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