I designed a website with the commercial website design company, Wix. Wix has an option to input your own HTML code into a page on the site. I did that on the following page: http://www.skywardlsat.com/#!about
However, if someone clicks "Next" to view videos 4-6, and then exits their browser, or pulls up the site from another computer, then, the next time they pull up the page, they see videos 1-3, not videos 4-6. What I want is for the changes made by one computer to change what every other computer sees. So, if one person clicks "next" to view videos 4-6, no one else accessing the webpage can ever view videos 1-3.