Issue in Firefox 3.6 with ajax call to PHP

Seems that a site I made for fun does not like to work in firefox 3.6 ... can't really figure out what is causing the issue tho, once i open firebug it works fine...

here is the link http://samsaccone.com/apad_开发者_如何学运维scroller/

any ideas would be appreciated,

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You have console.log statements @ line# 48 and line# 59 (console.log(spot); and

console.log("set up called");)

console.log is not available when FireBug is not enabled and hence the script fails.

Remove those lines and your page should work fine.