Manage image download with CSS

Hi to all,

I was wondering if User Agents still downolads images you have marked
display: none or visibility: hidden wich CSS.

Somebody knows how the major web browsers handles these situations
regarding the images download?

Thanks for your help.

Arturo Buonanni <leave_this_out_deer.chief.this.also (AT) gmail (DOT) com> wrote:

I was wondering if User Agents still downolads images you have marked
display: none

Not downloaded

or visibility: hidden wich CSS.

Downloaded

--
Spartanicus

Arturo Buonanni wrote:

Hi to all,

I was wondering if User Agents still downolads images you have marked
display: none or visibility: hidden wich CSS.

Somebody knows how the major web browsers handles these situations
regarding the images download?

Also (some ie) background images specified with css, but not used !!
Realistically, it's up to the agent to make decisions on what to preload
in case it's needed.

Chris

Spartanicus wrote:

Arturo Buonanni <leave_this_out_deer.chief.this.also (AT) gmail (DOT) com> wrote:


I was wondering if User Agents still downolads images you have marked
display: none

Not downloaded

Really? So if I have a javascript that changes the display on that
image, it will download it when display is changed?

I'm not trying to argue, but I have a hard time accepting that. Do you
have support for your contention?

Tony <tony23 (AT) dslextreme (DOT) WHATISTHIS.com> wrote:

I was wondering if User Agents still downolads images you have marked
display: none

Not downloaded

Really? So if I have a javascript that changes the display on that
image, it will download it when display is changed?

It should in proper browsers, apparently that doesn't include IE and
Mozilla offshoots.

--
Spartanicus

So, it's up to the Agent to handle that.

Ok, thank you all for the help. :-)

On Wed, 22 Mar 2006 17:00:20 +0000, Chris Sharman
<chris.sharman (AT) sorry (DOT) nospam> wrote:

Arturo Buonanni wrote:
Hi to all,

I was wondering if User Agents still downolads images you have marked
display: none or visibility: hidden wich CSS.

Somebody knows how the major web browsers handles these situations
regarding the images download?

Also (some ie) background images specified with css, but not used !!
Realistically, it's up to the agent to make decisions on what to preload
in case it's needed.

Chris

Spartanicus wrote:

Tony <tony23 (AT) dslextreme (DOT) WHATISTHIS.com> wrote:

I was wondering if User Agents still downolads images you have marked
display: none

Not downloaded

Really? So if I have a javascript that changes the display on that
image, it will download it when display is changed?

It should in proper browsers, apparently that doesn't include IE and
Mozilla offshoots.

So you're saying that the PROPER behavior is to not load the image on
the page load, and to load it when the div is displayed.

Again - what support do you have for that?

Tony <tony23 (AT) dslextreme (DOT) WHATISTHIS.com> wrote:

I was wondering if User Agents still downolads images you have marked
display: none

Not downloaded

Really? So if I have a javascript that changes the display on that
image, it will download it when display is changed?

It should in proper browsers, apparently that doesn't include IE and
Mozilla offshoots.

So you're saying that the PROPER behavior is to not load the image on
the page load, and to load it when the div is displayed.

It's the proper behaviour, not a must per spec. It's what I'm used to
seeing from my main browser.

Again - what support do you have for that?

Plain logic. Always downloading elements that are intended to be shown
when JS and CSS are enabled is a waste of resources.

That may not concern someone on a 10mbps home connection with 60G/M cap,
but it sure matters when on a mobile connected at 9600bps and charged
for every kb downloaded.

--
Spartanicus