6907 2006-01-29 01:11:06 -0800 REGRESSION: United.com menus messed up due to document.all/MSIE sniff 2006-01-31 21:20:58 -0800 1 1 1 Unclassified WebKit JavaScriptCore 420+ Mac OS X 10.4 VERIFIED FIXED http://www.united.com P1 Normal --- 1 webkit-bugs andersca andersca darin ddkilzer oldest_to_newest 30483 0 webkit-bugs 2006-01-29 01:11:06 -0800 If you visit http://www.united.com/ the entire left side of the page is unusable because of overlapping text/controls/tables. 30484 1 webkit-bugs 2006-01-29 01:25:36 -0800 Ah, actually seems to be the three JavaScript menus (Planning Travel, Travel Support, Mileage Plus) spilling into the content. It is accompanied with these messages in the console: [15475] http://a56.g.akamai.net/7/56/7207/149f8fe8f9724b/www.united.com/ual/asset/udm-control.js:TypeError: Undefined value [15475] http://a56.g.akamai.net/7/56/7207/79cde4ae7eb8b9/www.united.com/ual/asset/udm-style.js:TypeError: Undefined value [15475] http://a56.g.akamai.net/7/56/7207/426d2d78230e54/www.united.com/ual/asset/udm-dom.js:TypeError: Value undefined (result of expression um.addReceiver) is not object. (event handler):Undefined value 30485 2 darin 2006-01-29 01:28:21 -0800 The menu implementation seems to be "UDM4" from www.udm4.com. Not sure exactly what's failing yet. We need the JavaScript debugger! 30558 3 ddkilzer 2006-01-29 15:30:27 -0800 If the User Agent is changed to MSIE 6 via the Debug menu, the JS menu no longer "spills" into the page, but the drop-down menus don't appear when the mouse pointer hovers over the tabs. Looks like different stylesheets are used depending on the platform (but not the browser): <SCRIPT LANGUAGE="JavaScript"> <!-- if (navigator.appVersion.indexOf("Win") != -1) { if (document.layers){ document.write("<LINK REL=stylesheet TYPE='text/css' HREF='/ual_style_pc_n.css'>"); } // NN4+ else if (document.all) { document.write("<LINK REL=stylesheet TYPE='text/css' HREF='/ual_style_pc_e.css'>"); // MSIE4+ } } else if (navigator.appVersion.indexOf("Mac") != -1) { document.write("<LINK REL=stylesheet TYPE='text/css' HREF='/ual_style_mac.css'>"); } else { // not a v 4 or + } //--> </script> 30561 4 ddkilzer 2006-01-29 16:45:41 -0800 Ignore the differences in stylesheets from Comment #3. Those only change the size of fonts on the page. The larger issue is that WebKit is becoming increasingly schizophrenic. It is implementing increasingly more of an MSIE 6 personality, while continuing to maintain its Gecko (Firefox 1.x) personality. "Old" detection code will soon (if it's not already) think that WebKit is MSIE 6 or Firefox 1.x depending on which it checks for first. What's even more fun is that if there are multiple browser sniffing checks on a page, part of the JS code could assume it's on MSIE while another part of the code assumes it's on Firefox. It looks like the "regressions" on this bug are (in part) due to new code paths being taken in the JavaScript on the web page due to WebKit behaving more like MSIE. This means that to fix this bug, WebKit will have to implement more of MSIE's behavior. More details to follow on the individual errors reported to the JavaScript Console. 30562 5 ddkilzer 2006-01-29 16:50:28 -0800 Here are the JS errors reported: TypeError: Undefined value http://a56.g.akamai.net/7/56/7207/149f8fe8f9724b/www.united.com/ual/asset/udm-control.js Line: 11 TypeError: Undefined value http://a56.g.akamai.net/7/56/7207/79cde4ae7eb8b9/www.united.com/ual/asset/udm-style.js Line: 11 TypeError: Value undefined (result of expression um.addReceiver) is not object. http://a56.g.akamai.net/7/56/7207/426d2d78230e54/www.united.com/ual/asset/udm-dom.js Line: 12 Undefined value http://a56.g.akamai.net/7/56/7207/426d2d78230e54/www.united.com/ual/asset/udm-dom.js Line: 11 Note that line number are pretty much meaningless since the JS is compacted into a single long line in each script. 30564 6 ddkilzer 2006-01-29 17:07:15 -0800 TypeError: Undefined value http://a56.g.akamai.net/7/56/7207/149f8fe8f9724b/www.united.com/ual/asset/udm-control.js Line: 11 The first error is part of a JS check for Mac IE. um.u=navigator.userAgent.toLowerCase(); // ... um.wie=(um.d&&typeof um.m.all!=um.un&&typeof window.opera==um.un&&!um.k); um.mie=(um.wie&&um.u.indexOf('mac')>0); um.mx=(um.u.indexOf('tasman 0.9')>0); if(um.mx){um.mie=1;} um.omie=0; if(um.mie){ um.wie=0; um.iev=um.u; um.iev=um.iev.split('msie '); um.iev[1]=um.iev[1].split(';'); // um.iev[1] is undefined here um.iev=parseFloat(um.iev[1][0],10); um.omie=(um.iev<5.2); } // um.iev -- IE version number // um.mie -- isMacIE? // um.omie -- isOldMacIE? (before 5.2) // um.wie -- isWinIE? The only way I see to fix this error (other than evangelism) is to add an "MSIE X.Y" compatibility string to Safari's user agent, perhaps like this: Mozilla/5.0 (Macintosh; U; PPC Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko; MSIE 6.0) Safari/417.8 30578 7 6093 ddkilzer 2006-01-29 19:31:21 -0800 Created attachment 6093 Patch to add "MSIE 6.0" to user agent string I don't expect this patch to be accepted, but it's here to prove a point: WebKit is trying to act like MSIE in certain circumstances, so why not advertise it in the user agent string? Note that this change prevents the drop-down menus from being painted on the web page itself, although there are still x/y (event?) offset issues when actually drawing the drop-down menus Another approach would be to add "stealth" features to document.all and other commonly-used MSIE-specific DOM features so that browser sniffing code won't identify Safari+WebKit as MSIE. This has already been implemented by Firefox. http://www.mozillazine.org/talkback.html?article=5063 30585 8 6093 darin 2006-01-29 20:06:28 -0800 Comment on attachment 6093 Patch to add "MSIE 6.0" to user agent string This is the kind of thing that's going to have an effect on a vast number of websites. It's not clear how to decide whether this is safe or not. We can try it, but I'm worried that while it will fix problems on some sites, it will cause problems on other sites. 30586 9 darin 2006-01-29 20:07:40 -0800 We are already supposed to have "stealth" on our document.all. So I think the real issue is that our stealth document.all is failing. 30587 10 6093 darin 2006-01-29 20:08:48 -0800 Comment on attachment 6093 Patch to add "MSIE 6.0" to user agent string Lets pursue the "fix stealth document.all" path and come back to this if we decide that's the rigth thing to do. I believe Anders did the stealth document.all implementation and this initial version works for "==" but not for typeof. 30625 11 ddkilzer 2006-01-30 06:47:57 -0800 Using a locally-saved copy, I have confirmed that making this expression true (implementing stealth mode for 'typeof document.all') will fix the united.com home page: (typeof document.all == 'undefined') 30699 12 ddkilzer 2006-01-30 20:50:44 -0800 See Bug 6268 for the original "undetectable document.all" implementation. 30714 13 6136 andersca 2006-01-30 22:20:30 -0800 Created attachment 6136 fix 30716 14 6136 darin 2006-01-30 22:32:17 -0800 Comment on attachment 6136 fix Looks good, r=me. Two comments: 1) lets get rid of the exec parameter to isEqualToNull; 2) lets think about giving that function a better name, since it's not just about being equal to null any more 30751 15 ddkilzer 2006-01-31 05:54:34 -0800 Verified fixed as of r12491! 30753 16 webkit-bugs 2006-01-31 05:58:54 -0800 Me too! *hugs and kisses* 30897 17 eric 2006-01-31 21:20:58 -0800 Removing Regression keyword from bugs already fixed. 6093 2006-01-29 19:31:21 -0800 2006-01-29 20:49:42 -0800 Patch to add "MSIE 6.0" to user agent string bug-6907-fix-user-agent.diff text/plain 1920 ddkilzer SW5kZXg6IFdlYktpdC9DaGFuZ2VMb2cKPT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09 PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PT09PQotLS0gV2ViS2l0L0NoYW5nZUxvZwko cmV2aXNpb24gMTI0NjcpCisrKyBXZWJLaXQvQ2hhbmdlTG9nCSh3b3JraW5nIGNvcHkpCkBAIC0x LDMgKzEsMTYgQEAKKzIwMDYtMDEtMjkgIERhdmlkIEQuIEtpbHplciAgPGRka2lsemVyQGtpbHpl ci5uZXQ+CisKKyAgICAgICAgUmV2aWV3ZWQgYnkgTk9CT0RZIChPT1BTISkuCisKKyAgICAgICAg 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