You can also look for something completly different like a standalone script(one source could be codecanyon.net(most likely you have to buy the scripts and watch out to not to pick something for a CMS plugin like for wordpress). Maybe this script will match your needs?
If you decide to get a standalone solution you will need to modify it localy(best case) in a code editor(atom.io, adobe brackets, adobe dreamweaver, notepad++ ...), upload it to HubSpot via the file manager and connect it to a HubSpot page.
This website was created using Adobe Dreamweaver CS6 and consists mainly of hand-coded HTML5 and CSS3. It also uses several freely available JavaScript and jQuery plugins, a freely available CSS-based loading screen and CSS code from an online gradient generator. One of the plugins we were shown in class was the Cycle Slideshow Plugin, so I added it to this project. The code for the random number generator was freely available from GitHub and the input was validated through the use of Adobe Dreamweaver CS6.