Oddly enough, this page was gobbling up around 900Mb of RAM under Firefox 39.0 on Linux on a laptop with 1Gb. Firefox quit. Reloading with noscript active allow

Oddly enough, this page was gobbling up around 900Mb of RAM under Firefox 39.0 on Linux on a laptop with 1Gb. Firefox quit. Reloading with noscript active allowed the page to load but I was seeing something like 650Mb of RAM which is a record! What has the page got in it? (I resorted to elinks in a terminal to be able to read the text until I installed noscript). EDIT: Swapped another Gb of RAM in and still crashes Firefox with noscript disabled. Can read with noscript on.