There are many web browsers that don't support JavaScript, and JavaScript is something that can be quite easily turned off in many browsers that support it. Harder than it used to be, if anything.
Then there are those like myself that run NoScript or something similar where the author of the website has to entice me into allowing them to run javascript code on my computer. If I can find the correct one to enable out of the dozen or so that most websites seem to use.
