[PHP] Process bar [+rep]

Hey,

I need a process bar like the following images...
http://www.peergoal.com/scripts/quick_project_manager_lite/?ref=hotscripts.com-QPM

Where it gets like 35 from the database and shows 30% of a 100% shaded or a colour (eg green)

I cant seem to do it, can someone post a link to something like this or post an eg code or one that i can use?

Danny

<div style="width: 500px; border: 1px solid #000000; height: 40px;"><div style="height: 100%; width: <?php echo file_get_contents( "precent.txt" ); ?>%; background: green;"></div></div>

That should work, make a file called precent.txt and put the % you want the bar to be in there.