Show - Hide
Php - isset();
Comments
This script is based on :
php-function isset();
The script lets your Visitor ( ...as a link appears ) replace and reset html page - content .
The script can be customized to fit a sort of info link or what else it may cross your mind.

The image at width=0 is set to let the image be cached while viewing the not isset output.
... save jump.gif as well
You may publish ( in real time ) at this your suggestions or critics to this site, till next Visitor overwrites them...
Please do not exceed 244 bytes

Replace this text with something else !
Click on button Show

<?# File : show_hide.php
echo'<center>Php - isset();</center>';
if(!isset($link)){echo'<center>Comments ... </center>
<form method=post>
<input type=hidden name=link value=reset>
<input type=submit value=Show>
<img src=jump.gif width=0></form>
Replace this text with something else !';}
else{echo'<center>Comments ...<br><br><div align=left>
<a href=:location.href=location>$link</a>
</div></center><img src=jump.gif>';}
?>
The above is the basic script code,
if you like the format you can easily pick it up from here
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rightclick and search the following highlighted section
in the page source code, Copy & Paste & Save into your htdocs

<!-- Begin of script - layout
< ... ?# File name : ... ( begin )
 ↑ delete the dots ... above and tighten tag ( <? )
The php and html code will be in this area.
?> <! HTML - Area> <! end of File>
End of script - layout -->