Hi, with context version  2010.11.12 18:22, I get much
better results now. Thanks!
I guess, I now have a first feeling about
these things.

kind regards
Erik

2010/11/11 Erik Margraf <erik.margraf@googlemail.com>

> Thank's for your example! But I'm sorry to say, I didn't get it.
> When I run context on it, it results in a 2x2 matrix of pictures.
> Two of them show some reaction (change the color somewhat)
> when I click on them. (the cows don't). That's all.
>
> Maybe it has to with the following lines in the log file:
> ...
> interaction     : active
> references      : unknown reference [][VideLayer{1}]
> references      : unknown reference [][VideLayer{2}]
> references      : unknown reference [][VideLayer{3}]
> references      : unknown reference [][VideLayer{4}]
> ...
> I tried the following example from the Wiki:
> =======
> \defineproperty[my-hasitations][layer][state=stop]
>
> \startproperty[my-hasitations]
> To \ConTeXt\ or not to \ConTeXt?
> \stopproperty
>
> \button{Show   Decision}[VideLayer{my-hasitations}]
> \button{Hide   Decision}[HideLayer{my-hasitations}]
> \button{Toggle Decision}[ToggleLayer{my-hasitations}]
> ========
> This produces the analogous messages for these three buttons.
>
> My Context Version  - "MTXrun | current version: 2010.11.03 19:42"
> My LuaTeX Version - This is LuaTeX, Version beta-0.63.0-2010090921
>
> on Debian AMD64.  I looked at the files with Acrobat Reader 9 on Windows XP
> (BTW. I also tried this completely using a MiKTeX 9 Installation on WinXP
> without
> success)
>
> Am I missing something?
>
> kind regards
> Erik
>
>
>
> 2010/11/4 Wolfgang Schuster <schuster.wolfgang@googlemail.com>
>
>
>> Am 03.11.2010 um 17:38 schrieb Erik Margraf:
>>
>> > Dear Contexters!
>> > In the last few days I could read a few posts about
>> > "animations" in a resulting PDF document. Some
>> > statements mentioned java script as possible means
>> > to create an animation.
>> > Is it possible to do the following (which is rather
>> > simple using html and javascript)?
>> >
>> >   -- Have a bunch of thumbnail pictures
>> >   -- When you click on a thumbnail you see a
>> >      larger version of the same picture
>> >   -- With the next mouseclick the picture
>> >      vanishes (you see the gallery of thumbnails again)
>> >
>> > if yes, how?
>> > Any hints are welcome.
>>
>> Not perfect (it’s not possible to close the big pictures) but it should
>> give you a first impression:
>>
>> \setupinteraction[state=start]
>>
>> \defineproperty [1] [layer] [state=stop,global=yes]
>> \defineproperty [2] [layer] [state=stop,global=yes]
>> \defineproperty [3] [layer] [state=stop,global=yes]
>> \defineproperty [4] [layer] [state=stop,global=yes]
>>
>> \starttexdefinition properties
>>  \startoverlay
>>    {\startproperty[1]\overlayfigure{cow}\stopproperty}
>>    {\startproperty[2]\overlayfigure{mill}\stopproperty}
>>    {\startproperty[3]\overlayfigure{hacker}\stopproperty}
>>    {\startproperty[4]\overlayfigure{cow}\stopproperty}
>>  \stopoverlay
>> \stoptexdefinition
>>
>> \defineoverlay[properties][\properties]
>>
>> \startTEXpage[background={foreground,properties}]
>>
>> \bTABLE[width=4cm,height=4cm,offset=none]
>>  \bTR
>>    \bTD \goto{\overlayfigure{cow}}[VideLayer{1}] \eTD
>>    \bTD \goto{\overlayfigure{mill}}[VideLayer{2}] \eTD
>>  \eTR
>>  \bTR
>>    \bTD \goto{\overlayfigure{hacker}}[VideLayer{3}] \eTD
>>    \bTD \goto{\overlayfigure{cow}}[VideLayer{4}] \eTD
>>  \eTR
>> \eTABLE
>>
>> \stopTEXpage
>>
>> Wolfgang
>>
>>
>