I accidentally edited the theme functions.php file – now site is broken

Hi – I was trying to edit the theme functions.php file to allow custom sizing for product images. I must have made a mistake because now I am getting the following message:

Parse error: syntax error, unexpected ‘<‘ in /home2/saveonen/public_html/wp-content/themes/simple-shop/functions.php on line 29

Can you please send me the code that should go in there as it was originally, and will that fix the problem? I need this urgently…HELP!!!!