I have been trying to implement a graphical autonav, I followed Remo's tutorial and it works perfectly as explained, however when i tried to add a hover image it kept giving me an error

"Fatal error: Call to undefined function geturl() in D:\applications\xampp\htdocs\concrete\blocks\autonav\templates\img_nav.php on line 80

The code for template that I have been trying to modify can be found herehttp://pastie.org/1786981

I am aware there is a block made by Kino, that would be the last resort, however I would be curious to get this to work.

Hope someone can point me the mistake I am doing.