How to use dhtmlxGrid that use "form submit modes".

Hi Guys,
I try to use form submit modes in my grid. but I can’t find include “…/ext/dhtmlxgrid_form.js” file in grid sample code. anyone can help me?
Thanks
Helen

Latest version of dhtmlxgrid_form.js is attached.
dhtmlxgrid_form.zip (1.86 KB)