Webpage renders differently when loaded from Internet

[M.L.]

When loaded from my hard drive, the webpage I'm working on renders fine
on IE6, Firefox 2.0.0.1, and Opera 9.02. However, after uploading it to
the web there are 2 images that fail to display on those browsers. All
the other images and everything else on the page render just fine.

1.) I converted one of the gif images to a jpeg but that made no
difference.

2.) I validated the webpage offline using Tagcheck, and online using the
ww3.org validator. The only issues were the usage of Height and
Background attributes in the TD tag. But I've done that before with no
issues, and the tags for the missing images do not use either of those
attributes.

3.) The images uploaded OK to the ISP and show correct sizes of 12 and
23 KB respectively.

4.) When I right-click on the jpg image placeholder to check for
properties:
IE6 shows: ad3.jpg file (correct), type = gif (incorrect),
dimensions: 273x88 pixels (correct), size = 42 bytes (incorrect)
Firefox shows: ad3.jpg file (correct), no type specified,
dimensions: 273x88 pixels (correct), size = 42 bytes (incorrect)
Opera shows: ad3.jpg file (correct), type = gif (incorrect),
dimensions: 1x1 pixels (incorrect), size = 42 bytes (incorrect)

5.) I entered the full web address of the jpg image into each web
browser and got the following results:
IE6: Nothing appeared in the browser window
Firefox: Nothing appeared in the browser window, however the tab
showed "ad3.jpg (Gif image. 1x1 pixels)"
Opera: Nothing appeared in the browser window

6.) I called and asked my brother to load the webpage from his computer.
He says there are no images missing and correctly described both of them
to me.

7.) I rebooted my computer and tried again, but nothing changed.

It's as though 1x1 transparent gifs have been substituted for only those
2 images, and only when *I* load from the web. I have run out of ideas
as to why this is happening on my system. Any additional ideas for
troubleshooting will be greatly appreciated. Thanks.

[Mike Easter]

M.L. wrote:

the webpage I'm working on

Any additional
ideas for troubleshooting will be greatly appreciated.

My experience with watching people describe things in great detail
poorly as contrasted to gving access to what is being described with one
line or a link is that the greatly detailed inadequate description
sucks, and simple access to the real thing works.

If you can't give the people you are asking for help access to the real
thing, you should just work it out yourself or talk to someone/someplace
that you /can/ give access to the actual item.
--
Mike Easter

[Andy Dingley]

On 4 Feb, 21:39, "M.L." <[e-mail]:

When loaded from my hard drive, the webpage I'm working on renders fine
on IE6, Firefox 2.0.0.1, and Opera 9.02. However, after uploading it to
the web there are 2 images that fail to display on those browsers.

You didn't tell _us_ the URL though. did you?

[Beauregard T. Shagnasty]

M.L. wrote:

When loaded from my hard drive, the webpage

<snip unnecessary essay>

What is the URL to the page?

--
-bts
-Motorcycles defy gravity; cars just suck

[=?ISO-8859-1?Q?G=E9rard_Talbot?=]

followup-to set: comp.infosystems.www.authoring.html

M.L. wrote :

When loaded from my hard drive, the webpage I'm working on renders fine
on IE6, Firefox 2.0.0.1, and Opera 9.02. However, after uploading it to
the web there are 2 images that fail to display on those browsers. All
the other images and everything else on the page render just fine.

1.) I converted one of the gif images to a jpeg but that made no
difference.

2.) I validated the webpage offline using Tagcheck,

Tagcheck is not any better than HTML Tidy; Tagcheck is just a software
checking appropriate nesting of elements. "It does not validate anything
else." HTML Tidy will not only check appropriate nesting of elements but
will repair improper nesting of elements... and it will do a number of
additional checkings and correction.

Tagcheck's very own website has validation markup errors!
See:

http://validator.w3.org/check?uri=ht.../tagcheck.html

and online using the

ww3.org validator. The only issues were the usage of Height and
Background attributes in the TD tag. But I've done that before with no
issues, and the tags for the missing images do not use either of those
attributes.

3.) The images uploaded OK to the ISP and show correct sizes of 12 and
23 KB respectively.

4.) When I right-click on the jpg image placeholder to check for
properties:
IE6 shows: ad3.jpg file (correct), type = gif (incorrect),
dimensions: 273x88 pixels (correct), size = 42 bytes (incorrect)
Firefox shows: ad3.jpg file (correct), no type specified,
dimensions: 273x88 pixels (correct), size = 42 bytes (incorrect)
Opera shows: ad3.jpg file (correct), type = gif (incorrect),
dimensions: 1x1 pixels (incorrect), size = 42 bytes (incorrect)

5.) I entered the full web address of the jpg image into each web
browser and got the following results:
IE6: Nothing appeared in the browser window
Firefox: Nothing appeared in the browser window, however the tab
showed "ad3.jpg (Gif image. 1x1 pixels)"

Well, does that make sense? You mishandle the image format, it seems.

Opera: Nothing appeared in the browser window

6.) I called and asked my brother to load the webpage from his computer.
He says there are no images missing and correctly described both of them
to me.

7.) I rebooted my computer and tried again, but nothing changed.

It's as though 1x1 transparent gifs have been substituted for only those
2 images, and only when *I* load from the web. I have run out of ideas
as to why this is happening on my system. Any additional ideas for
troubleshooting will be greatly appreciated. Thanks.

It could be a number of things but without the ability to actually check
the webpage live on the web, there is very little we can do. Good luck!

followup-to set: comp.infosystems.www.authoring.html

Gérard
--
Using Web Standards in your Web Pages (Updated Dec. 2006)
http://developer.mozilla.org/en/docs...your_Web_Pages

[Zilbandy]

On Sun, 4 Feb 2007 15:39:51 -0600, "M.L." <[e-mail]:

>When loaded from my hard drive, the webpage I'm working on renders fine
on IE6, Firefox 2.0.0.1, and Opera 9.02. However, after uploading it to
the web there are 2 images that fail to display on those browsers. All
the other images and everything else on the page render just fine.

My first guess would be that you have the name of the file messed up.
Most all web servers are case sensitive in their filenames. Mypic.gif
is not the same as mypic.gif. Check your html and check the name on
your web host's server. This jumped up and bit me just a few weeks
ago. :)

--
Zilbandy

[M.L.]

>When loaded from my hard drive, the webpage I'm working on renders

>fine on IE6, Firefox 2.0.0.1, and Opera 9.02. However, after
uploading it to the web there are 2 images that fail to display on
those browsers.

You didn't tell _us_ the URL though. did you?

Others have criticized me for the URL omission but it was intentional.
My original post indicated that the problem didn't happen when another
user launched the website remotely, so I didn't want to confuse the
issue. I was simply making a plea for general troubleshooting tips from
others who might be familiar with such a problem. It appears to be local
to my computer. Thanks anyway to all who replied.

[M.L.]

<snip>

>5.) I entered the full web address of the jpg image into each web
browser and got the following results:
IE6: Nothing appeared in the browser window
Firefox: Nothing appeared in the browser window, however the tab
showed "ad3.jpg (Gif image. 1x1 pixels)"

Well, does that make sense? You mishandle the image format, it seems.

Do you have any ideas on how I could have mishandled the image in a way
that allows it to display properly offline? And allows it to display
properly from the Internet for someone else, but not me (as indicated in
my original post)? Thanks for your reply.

[M.L.]

>When loaded from my hard drive, the webpage I'm working on renders

>fine on IE6, Firefox 2.0.0.1, and Opera 9.02. However, after
uploading it to the web there are 2 images that fail to display on
those browsers. All the other images and everything else on the page
render just fine.

My first guess would be that you have the name of the file messed up.
Most all web servers are case sensitive in their filenames. Mypic.gif
is not the same as mypic.gif. Check your html and check the name on
your web host's server. This jumped up and bit me just a few weeks
ago. :)

Thanks for the advice. I will double-check the name issue. But I want to
repeat that the issue did not occur to another user who launched the
webpage from the Internet. It appears to be a local issue. Maybe I
should just forget about it since the problem does not occur offline.

[Chris Morris]

"M.L." <[e-mail]:

You didn't tell _us_ the URL though. did you?

Others have criticized me for the URL omission but it was intentional.
My original post indicated that the problem didn't happen when another
user launched the website remotely, so I didn't want to confuse the
issue. I was simply making a plea for general troubleshooting tips from
others who might be familiar with such a problem. It appears to be local
to my computer. Thanks anyway to all who replied.

One thing that might be causing it is that you have some ad-blocking
software on your computer's firewall, and either the image name or
size triggers this software, which replaces the image with a 1x1
transparent GIF. Naturally the majority of users will see the image
fine since they don't have this software.

--
Chris

[Andy Dingley]

On 5 Feb, 07:37, "M.L." <[e-mail]:

Others have criticized me for the URL omission but it was intentional.

Then you may criticize me for not wasting time on guessing a solution
in the absence of any useful evidence to guide me, but that's
intentional too.
You _might_ find paths in there to the local filesystem. If there's a
"C:\" anywhere on the page, it's wrong.

[M.L.]

"Chris Morris" <c.********@durham.ac.ukwrote in message

One thing that might be causing it is that you have some ad-blocking
software on your computer's firewall, and either the image name or
size triggers this software, which replaces the image with a 1x1
transparent GIF. Naturally the majority of users will see the image
fine since they don't have this software.

BINGO!!! That was it! My Outpost firewall has ad blocking features, one
of which blocked filenames fitting the ad1, ad2, etc. pattern. I chose
to rename the affected image files and leave the ad filter intact. Thank
you so very much.

[M.L.]

"Andy Dingley" <di*****@codesmiths.comwrote in message

<snip>

You _might_ find paths in there to the local filesystem. If there's a
"C:\" anywhere on the page, it's wrong.

The problem turned out to be related to an ad blocking feature in my
firewall. Thanks for offering to help.