Online calculator

Hello! I created an online calculator based on the provided video tutorial.

In the site admin, everything went smoothly while working with the webforms module. Problems arose when working with js. 

Please advise what and where I need to specify to link the js file to the page where the calculator will be, how to name this file, and where it should be located. 

I have the standard Bartik template. Here is the content of its info file.

name = Bartik

description = A flexible, recolorable theme with many regions.

package = Core

version = VERSION

core = 7.x

stylesheets[all][] = css/layout.css

stylesheets[all][] = css/style.css

stylesheets[all][] = css/colors.css

stylesheets[print][] = css/print.css

regions[header] = Header

regions[help] = Help

regions[page_top] = Page top

regions[page_bottom] = Page bottom

regions[highlighted] = Highlighted

regions[featured] = Featured

regions[content] = Content

regions[sidebar_first] = Sidebar first

regions[sidebar_second] = Sidebar second

regions[triptych_first] = Triptych first

regions[triptych_middle] = Triptych middle

regions[triptych_last] = Triptych last

regions[footer_firstcolumn] = Footer first column

regions[footer_secondcolumn] = Footer second column

regions[footer_thirdcolumn] = Footer third column

regions[footer_fourthcolumn] = Footer fourth column

regions[footer] = Footer

settings[shortcut_module_link] = 0

; Information added by drupal.org packaging script on 2013-08-08

version = "7.23"

project = "drupal"

datestamp = "1375928238"

Thank you!