Hi, i cannot seem to get my select box / drop down box working in all browsers... i have spent nearly a week trying to sort this and i cannot get it to work

The drop down menu does not show correctly in google chrome (mac) or safari (mac) or IE7 (PC) (there seems to be a padding issue) HOWEVER it shows fine in firefox (pc) and firefox (mac)

I have attached screenshots below of the problem and you can see my code on the following url: http://goo.gl/7XAIz

screenshot.png

I would be very grateful if someone could help me with this, as i just can't get it to work, thanks in advance for your help...