IE5.5: First Look

Friday December 3rd, 1999

I've done some preliminary CSS testing of IE5.5 (available through Specifically I ran IE 5.5 through the battery of David Baron's CSS tests, and found some interesting results. IE 5.5's CSS support has undergone very little change from 5.0, and some regressions were noticable. IE 5.5 seems to pass test 5.3 (CSS2 Universal Selector) that IE 5.0 did not, but it fails two tests in section 6.4.4 (Parsing Test 4 and Test 5) that IE 5.0 apparently passed. There was one other that *may* have passed (9.1.2) where 5.0 failed, and one test in 10.7 *may* have failed where 5.0 passed, but I can't determine these for a certainty. Finally, IE 5.5 still does not pass the Box Acid Test.

According to MS's "What's New in Internet Explorer 5.5" page, IE 5.5 handles more "CSS styles" such as first-letter and first-line, but they don't go into any more detail.

From these results, I'm wondering if MS is giving up completely on significant advances in the CSS support in their current rendering engine. IE on the Mac is supposedly being developed to utilize a new rendering engine, codename "Tasman". Maybe Microsoft is planning something similar for their 6.0 Windows version.

In any event it does not look like the next version of IE will have significant CSS improvements as many hoped and expected.

#49 IE5.5: First Look

by basic <>

Saturday December 4th, 1999 1:47 AM

You are replying to this message

Mozilla still needs some "polishing up" and we can start doing the things you suggest. I can't wait for beta.

By the way, mozilla's performance is getting better and better each day with each new build (M11 was slow, but it's bounced back since. And it's UI is more responsive than before.) Lets make this the coolest XP-browser yet!

As for multiple-pop check this "bug"


PS: I'm currently juggling between IE & NS (IE for browsing because NS's redrawing is too annoying, and NS for email because OE is too dangerous), when Moz is out I will have not reason to juggle between these 2 :)