This bookmarklet should drop black boxes that are movable and resizable onto the page anchored by the main page for scrolling (frames don't work yet)
You can use this to mask of stupid things while you're watching streams or reading text.
Open the raw version of pagemask.js https://raw.githubusercontent.com/hachi/pagemask/master/pagemask.js and copy the whole content into your clipboard.
Go to http://chriszarate.github.io/bookmarkleter/ and paste it in the upper box.
- Check "URL encode"
- Uncheck "Wrap in IIFE"
- Check "Minify"
- Uncheck "Make sure a modern version of JQuery is available"
Drag the "My Bookmarklet" into your bookmarks (bar)