If <IMG src="xxx" style="position:absolute" onclick="alert('hello')"> is inserted inside of a <SPAN style="position:relative"></SPAN> tagset, clicking on the image does not fire the onclick() event.

HTML Element

The above testcase works fine for me in Linux mozilla 2000-07-21-15-M17. Reporter: Please attach (to this bug) a testcase that shows the problem. If not, this bug will be marked WORKSFORME. Also, please say in what build you are seeing the problem.

I am using the M16 build (incl. MathML/SVG) on Windows NT4 SP6, and the testcase attachment fails.

Just pulled and built on NT and Linux, and can't reproduce using David Baron's testcase. However, I did notice a couple of other bugs: 1) When you open the testcase, you will get an assertion that you can (safely?) ignore. 2) When you click the image in the test case, dismiss the popup and then press back button, the browser always crashes. Can you see these too? I do not know if they are new or duplicates, searching... I will add info here once I find the bugs or create new ones.

I turned on MathML and SVG, and I am building now to test this on NT.

The crasher is bug 42372.

I cannot reproduce this with MathML & SVG enabled. Marking WORKSFORME. If you can reproduce this with a new build please reopen this bug and add some information about your computer setup etc. if there is something special in it.

Mass update: changing qacontact to ckritzer@netscape.com

Updating QA Contact.

I am using Mozilla build 2000091312 with MathML/SVG enabled, and the test case fails. Clicking on the Mozilla GIF does nothing, when it should display "hello" in a message box. I got the same result in Netscape 6 PR3, build 2000092908. In fact, I usually have to reload the test document in order to get the image to appear.

Well, there are a few issues here. One is the fact that the onClick is not being called, the other is that on NT and MacOS builds of 10-29 the thing is basically not rendering at all. CONFIRMED.

Using Hixie's testcase I can get the "pass" alert box if I click on the area where the two boxes with text overlap. Clicking anywhere else I do not get the dialog. Also, on first load the page is not painted properly. I do not see the text in the span element (only the tops of the letters). If I move a window over this content I can see everything properly.

Distant (or maybe not-so-distant) cousin of http://bugzilla.mozilla.org/ show_bug.cgi?id=52421 I think.

Reassigning QA Contact for all open and unverified bugs previously under Lorca's care to Gerardo as per phone conversation this morning.

Setting milestone. This bug has been marked "future" because the original netscape engineer working on this is over-burdened. If you feel this is an error, that you or another known resource will be working on this bug,or if it blocks your work in some way -- please attach your concern to the bug for reconsideration.

Please re-open this bug...it is critical to our "Math On the Web" component, MathPage. We use absolute-within-relative positioning to display equations properly without interrupting line spacing. The onclick method is then used to show an enlarged version of the equation. This is a critical feature of MathPage. The attachments both fail to work correctly in Mozilla 0.8.1

QA contact updated

As the second attached test case shows (#18323), this problem is not limited to images but to any absolute positioned item within a relative positioning context. I changed the bug title (summary) to reflect this. This seems to be a pretty major bug in the event handling mechanism when CSS positioning is involved. How can something this basic be marked as a 'Future' fix? I have tested #18323 on Mozilla 0.9.3 on Windows NTSP6.

This problem is still occurring in Netscape 6.2 and Mozilla 0.9.5 Build ID 2001102403 on my Windows NT SP6 system. I will attach another test case that shows this problem. The onmouseover event also is not passed through, so it is possible that no mouse events get through to the positioned items. I have changed the bug title (summary) to reflect this.

There is no difference between using addEventListener or the element's attributes (onclick, onmousemove, etc). I'll attach another testcase that might be clearer.

The testcase in comment 24 has nothing to do with this bug, and is in fact invalid.

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Testcase from comment #22 tested on Mozilla 1.4 for Linux: first test: works second test: works third test: alert pops up every second click forth test: works fifth test: alert pops up sometimes (not deterministic)

*** Bug 252098 has been marked as a duplicate of this bug. ***

*** Bug 276738 has been marked as a duplicate of this bug. ***