Since neither IE 4-5, Netscape 4+ and Opera 5+ fully support most aspects of Dynamic HTML, all are considered 'broken' in one respect or another. This is also the case for other features shown, unless every standard method of accessing and using all features is fully supported. Note that the W3C rewrote history by discarding Javascript Stylesheets in favor of cascading-only (CSS), and Netscape have obliged by removing it from version 6 - Gekko. Note that popularity is not comparable between platforms, since many computers are rare themselves. Amiga, (really rare) actually has dozens of browsers/versions not shown.

Note that the various revisions of IE browsers have vastly different capabilities, and the AOL browsers are mail-crippled clones of IE2 or IE3. Netscape 3-5, Opera 3+ and IE 4+ have roughly similar javascript behavior, IE5 has finally opted for a 'paid version' of Sun's Java applet-engine, in place of their failed clone of it, but IE6 is now completely broken and has none. IE3/AOL4 have gross wallpaper, window-opening, text and color rendering and other scripting peculiarities, especially on different computers, and except for the 'new' AOL version, are falling from favor. AOL users usually add Netscape 3+ to their systems depending on their type of computer.

WebTV+ now supports some basic image swapping javascript and style features, in it's own very peculiar, largely broken fashion, but both they and older AOL browsers often have problems rendering tables and sending form data or fulfilling document requests by the Post or Get methods and using pass-thru URL's (URL's with passwords in them) which are serious bugs.

The others have no or little javascript support available. Only the 4-5version browsers are more or less compatible and support both Javascript 1.2 and Cascading Stylesheet (CSS) use, necessary for compatible DHTML animation. Netscape 4.xx and IE 4.xx vary in that only Netscape recognizes Javascript Style language, but both recognize Text/CSS Style language. Both also used different object names (syntax) for page style elements which can be worked around, but IE 4-5 still has some major bugs in it's annoying scrollbar activity for off-screen objects, that interfere with animation. Only Netscape offers a method of detecting the browser windows actual size (innerheight innerwidth) within or outside of the user's screen's current viewable size essential to accurately position special effects into documents.

IE 4-5 does offer some lame ActiveX/VB script interfaces that are horrendously slow but useful with online Access (ODBC) databases. Fortunately, server side ASP (active server) is far more efficient for these tasks! IE still cannot display background images across elements in table rows, has no javascript console and may not preload swap-images reliably. IE 5.5 is little more than another bug-fix with a few minor cosmetic changes from IE 4.02, in main part which is the ability to install it in it's own directory and maintain different versions on the same machine, and genuine Java.

As part of their malicious plans to leverage their OS monopoly to destroy Netscape, IE was deliberately made HTML fault tolerant for tables. Missing, mandatory tags that mark the end of a table were 'illegally' mis-engineered to be ignored by it, so that an improperly written, invalid HTML page that appears to "work fine" in IE would be totally invisible in all other W3C standard browsers! You will not find such a broken table on any page at the Microsoft website, although they claimed it was an "innovation"! As a result of this deliberate, malicious flaw, IE cannot be used to "proof" a page! Netscape 6 and Opera 5 have now adopted these 'garbage table' rendering defects in order to be seen to "appear to work" with similar effect!

One major thing you cannot ignore are the many web-translation systems out there! The web is a huge place! If a person speaking a foreign language wishes to read your webpage, they will go to a site like ALIS to see it rendered in this new language. You have no control of this, since foreign sentences and paragraphs cannot be accounted for!

A raft of new alternative browsers are also out there now, which beg the question, how many people can you please? Foreign language browsers (with built in translation) and those crafted for the disabled basically all support the Navigator3(Gold) standard, known as HTML 3.2 and this will remain the univeral "proofing" standard for the indefinite future.

Netscape have now released a radically smaller, more powerful and efficient version 6. In addition, to perfect support for almost everything, this new browser supports the W3C's Document Object Model and the world's first "correct" support for the CSS stylesheet syntax. It is also the first fully XML (a newer, more extensible subset of HTML's old, very complex SGML parent) compatible browser! It is still in nightly-build beta versions (Mozilla 6 - Gekko) for the most advanced IX-UX operating systems.