Your mission is to exploit this code, which has obviously an LFI vulnerability:

GeSHi`ed PHP code

1 2	$filename = 'pages/'.(isset($_GET["file"])?$_GET["file"]:"welcome").'.html'; include $filename;

There is a lot of important stuff in ../solution.php, so please include and execute this file for us.

Here are a few examples of the script in action (in the box below):
index.php?file=welcome
index.php?file=news
index.php?file=forums

For debugging purposes, you may look at the whole source again, also as highlighted version.

Thanks go out to minus for his alpha testing, great thoughts and motivation!