[Javascript] Serious Internet Explorer bug.

[Roland Neilands]

Have had the same(?) problem for a long time, only sometimes on some pc's.
Basically this line:
parent.SDViewer.TheImage.src = filenames[imgno];

would work the first time & then randomly not on subsequent uses of the same image.

I just found that switching these PC's to use a proxy server gets around this problem.

Cheers,
Roland

> -----Original Message-----
> From: javascript-bounces at LaTech.edu
> [mailto:javascript-bounces at LaTech.edu]On Behalf Of Hakan M.
> Sent: Friday, 12 December 2003 2:30 AM
> To: [JavaScript List]
> Subject: [Javascript] Serious Internet Explorer bug.
> 
> 
> Hello,
> 
> I'm encountering heavy problems with this bug:
> 
> http://support.microsoft.com/default.aspx?scid=kb;en-us;269802
> 
> It took me a while to figure out that it was this bug in the first place 
> because of it's absolute RANDOMNESS.
> After close inspection of some test machines we found that if the cache 
> is set to 'Every visit to page' the bug almost always happend. And when 
> set to 'Automatically' it rarely happend. Furthermore, the actual 
> setting of the cache SIZE obviously also made a LOT of difference. When 
> the cache was set to some small (5MB) size, the bug was popping up 
> constantly.
> 
> Why is this bug happening anyway? This quote from the MS-site is not 
> very helpfull:
> 
> "As described earlier, this may demonstrate the problem described in 
> this article, depending on the timing of other portions of the Web 
> application."
> 
> The timing of what? What should or should not be done during what?
> 
> ps. We could not get the bug-example on 269802 to actually cause the bug.
> 
> 
> In theory we have total control over the webapplication. So we can time 
> everything. But things like waiting to load each image until the 
> previous image finished loading seems like an overkill, Especially when 
> running other testcases of loading 1500+ unique images at once and not 
> having any problems at all!
> 
> 
> Further info:
> Platform: WindowsXP / IE6.0
> We use the Microsoft.XMLHTTP object to get data.
> We use normal IMG tags
> We use background images(through inline styles and classes)
> We use gif and jpg images (jpg are saved for web so they do not have the 
> XML Bug that also causes craches)
> 
> We observed the reloading of bg-images when:
> 
> <div onmouseover="this.className='class1';" 
> onmouseout="this.className='class2';">
>     text
>     <div style="background-image:url(test.gif);">text</div>
>     text
> </div>
> 
> (just a nice oddity by itself)
> 
> 
> 
> 
> So does anybody have an idea what this 'Timing' could be and/or its 
> relation to cache? In other words: When or Why does this happen?
> 
> Thnx,
> 
> Gerbert Kaandorp through Hakan
> 
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