Webmaster Forum / Browsers / Internet Explorer / October 2005

We have javascript that loads images on demand. The script is the usual
form:

var image = new Image()
image.onload = myOnLoad
image.onerror = myOnError
image.src = imageUrl

(i.e. nothing exciting at all)

The problem is that the image, which is built on the fly, sometimes
fails (about 2%) to fire the onerror method, well after our packet
sniffer shows that all the bytes have arrived. We just never get an
onerror() call at all for these images.

Here are the headers for a request that fails:

null: HTTP/1.1 200 OK
Date: Sat, 08 Oct 2005 04:08:23 GMT
Server: Resin/3.0.14
Content-Type: image/gif
Transfer-Encoding: chunked
Via: 1.1 rl1 (Redline Networks Enterprise Application Processor - E|X
4.1.25 0)
Cache-Control: no-store

I am wondering if the problem is with "Transfer-Encoding: chunked", and
if we need to pad our generated image with some bytes to tell IE that
the image has finished!