> Portal Navigation: > > - Append `.md` to any URL under `https://dev.wix.com/docs/` to get its markdown version. > - Pages are either content pages (article or reference text) or menu pages (a list of links to child pages). > - To get a menu page, truncate any URL to a parent path and append `.md` (e.g. `https://dev.wix.com/docs/sdk.md`, `https://dev.wix.com/docs/sdk/core-modules.md`). > - Top-level index of all portals: https://dev.wix.com/docs/llms.txt > - Full concatenated docs: https://dev.wix.com/docs/llms-full.txt # Method name: setBackgroundScroll(backgroundScrollEnabled: boolean) # Method package: wixWindowFrontend # Method menu location: wixWindowFrontend --> Lightbox --> setBackgroundScroll # Method Link: https://dev.wix.com/docs/velo/apis/wix-window-frontend/lightbox/set-background-scroll.md # Method Description: Sets whether the site in the background behind a popup can be scrolled while a popup overlay is open. > **Note:** The terms popup and lightbox refer to the same element. While the editor and dashboard now refer to it as a [popup](https://support.wix.com/en/article/studio-editor-using-popups), the API methods continue to use the term lightbox for backward compatibility. The documentation uses both terms accordingly. If `backgroundScrollEnabled` is `true`, site visitors can scroll the site in the background behind a popup while a popup overlay is open. If `backgroundScrollEnabled` is `false`, site visitors can't scroll the site in the background behind a popup while a popup overlay is open. The default for `backgroundScrollEnabled` is `false`. > **Note:** This method only affects the site in the background behind a popup. It doesn't affect the scrollability of the popup content itself. # Method Code Examples: *** Note: do not assume any prop names or enum values other than the ones in the example. ## Allow site visitors to scroll the site in the background behind a popup while a popup overlay is open ```javascript $w("#myLightbox").setBackgroundScroll(true); ``` ---