brettbrewer.com

I've been testing out a few download managers on my site and so far my favorite is the VFM File Repository component. It's got some nice AJAX functionality, but lacks a functional category feature, so all downloads simply display in a list. When editing the descriptions via AJAX, I discovered some issues with quotes not being properly unescaped. To fix this, simply open the "components/com_vfm/vfm.php" file. On about line 191 you will see the following code:

 $result = $vfm->setAttribute(array( 'description' => $_REQUEST['contents'] ));

 Simply replace it with 

 $result = $vfm->setAttribute(array( 'description' => stripslashes($_REQUEST['contents']) ));

This will fix the escaping problem and allow you to embed quotes and html with attributes into your descriptions. You can do the same thing for the title field by making a similar edit to line 179 of the source file. 

I have been speculating for years about alternative methods for generating electricity. Recently I was thinking about how plants are able to efficiently store solar energy as sugar and wondered if it might be possible to coax them into generating free electrons that could be siphoned off directly as an electrical current. I wondered if there might be some way to splice some genes from an electric eel or some other bioelectric organism and get a tree to produce a similar electrical field. Of course, this seems somewhat impossible since they biological systems in a tree are nothing like those in an eel. But after a bit of searching I came across this article which describes a method of extracting current directly from a tree using a method that most elementary school science fair participants will probably be familiar with from their "potato battery" experiments. Apparently Gordon Wadle, an inventor from Thompson, IL. was thinking about how lightning eminates from the ground, often near large trees. He basically did a variation of the "potato battery" experiment with a tree instead of a potato and it worked.

"Simply drive an aluminum roofing nail through the bark and into the wood of a tree -- any tree -- approximately one half inch; drive a copper water pipe six or seven inches into the ground, then get a standard off-the-shelf digital volt meter and attach one probe to the pipe, the other to the nail and you'll get a reading of anywhere from 0.8 to 1.2 volts of DC power," he said.

And apparently, no matter how many spikes you put into a tree, they all produce the same amount of energy, so a single tree is probably capable of putting out much more energy than the simple experiment suggests. Talk about a sure-fire way to get people to plant more trees! Anyway, the inventor and a company called MagCap Engineering, LLC. have applied for a patent, so hopefully we will hear some more about this in the near future. In the meantime, I think I'll see how much electricity the oak tree in my back yard is producing. 

I had a small issue (several actually) with the Joomla MP3Player module . There are several out there based on the jeroenwijering Flash MP3 player , but all of them are a bit picky about how you configure them and they seem to fail to properly implement the options available in the original standalone player. In particular, the "repeat" option doesn't work right. Instead of using the values "true", "false" and "list" for the values of the "repeat" variable, the module uses "0" and "1" and completely omits the option to jump to the next playlist item using the value "list". So I made a slight change to two module files and am posting them here for your pleasure. 

Download the module files 

Just extract the two module files from the above archive and upload them into your Joomla "modules" folder, overwriting the old versions. Then go to the config screen for the mp3player module (or whatever you have named it in on your modules admin screen) and set the "repeat" option to "list". Now when a song finishes playing, the next song in your list will automatically start. If you have shuffle play enable then it will play the next random selection instead. Also, if you do not set the repeat option at all, it will default to the "list" repeat behavior. 

Please note that I DID NOT WRITE THIS MODULE or the player from which it is derived. I take no credit for anything, not even this patch. Use at your own risk, yada, yada, yada. 

To see the module in action, head on over to my music section .