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I'm not 100% sure of the cause, but there's Javascript problem on IE 6 (probably other browsers as well). My development machine is set up to display errors - I can ignore the problem and it continues fine.
I reproduce the problem by going to the admin Control Panel and clicking the yellow buttons on the left. Sometimes a page is loaded and there's a problem with the PHP Layers Menu (layersmenu.js):
Error on line 25 - Object ExpectedThe problem is on the underscored line:
} else if (IE4 && DOM && !Opera5 && !Konqueror) {
[b][u]currentY += document.body.scrollTop;[/u][/b]
}
As a test, I added a line before that:
} else if (IE4 && DOM && !Opera5 && !Konqueror) {
if (!document.body) alert("what the heck?");
currentY += document.body.scrollTop;
}
The alert() pops up every once in a while - it looks like this JavaScript callback is being executed before the page is fully loaded.
To get around the problem, I check for the existence of the document.body object before dereferencing it:
} else if (IE4 && DOM && !Opera5 && !Konqueror) {
if (!document.body) return
currentY += document.body.scrollTop;
}
I'm not sure if anyone else has run into this, but I thought I'd share with everyone...
