eCSStender: a modular tool for implementing CSS3 properties in legacy browsers

Do you remember how (for many years in a row) the IE7-JS project (by Dean Edwards ) was known , aimed at bringing Internet Explorer 6 (and then Internet Explorer 7) to the level of modern browsers?

Now another developer has developed this idea. Recently, after all, such CSS3 properties have appeared that only one modern engine supports (for example, WebKit), or even none (because all engines require their own prefixes to this property: “-moz-”, “-ms- ", " -O- ", " -webkit- "- otherwise they don’t work). All browsers need crutches (more or less solid) to support CSS3. ECSStender

Library (author - Aaron Gustafson)claims to be the basis of just such a crutch. I say “basics”, since in itself it provides only a small (≈20 Kb JS) platform for analyzing CSS styles - and separate extensions written in accordance with the documentation should be engaged in supporting specific CSS properties (working on top of it) . Now there are already half a dozen extensions, of which half are crutches for IE. For the trial, I drove the Firefox 4 Beta 2 Build 1 browser on the eCSStender website (this is not the final second beta, but close to that)

and felt noticeable brakes for tens of seconds, even despite the new cool JägerMonkey engine. This is probably because four of the six extensions are stuck in the main javascript of this site .

Your impressions, however, may differ from mine.