hmm.. some regexp that i wrote late night

gistfile1.php

$buffer = preg_replace('/(http([^\s]+))/', '<a target="_blank" href="\\1">\\1</a>', $buffer);
$buffer = preg_replace('/(image:)([^\s]+)/', 
				'<img style="float: right; margin: 0px 0px 15px 15px; width: 150px;" src="\\2"/>', $buffer);