[jQuery] Code not working in IE but is working in FF

[jQuery] Code not working in IE but is working in FF


I posted something similarly before but I posted wrong code. This
time, everything is correct and I'll provide all the information
needed.
First of all, the URL to the site which is not working is
http://uf.ekdahlproduction.com/itsvintage2/
The error: In FF everything works perfectly but in IE it gets stuck on
1% and nothing happens whatsoever.
The code:
$(document).ready(function(){
$("#slogan").css('opacity','0');
var step = 10000;
(function(){
step -= 100;
$("#percentage").text(100-step/100 + '%');
if ( step > 0 )
$("#logo").fadeTo(100,1-step/10000, arguments.callee);
else window.location = "http://uf.ekdahlproduction.com/
itsvintage2/home.html";
if ( step == 3500 )
$("#slogan").fadeTo(3500,1);
})();
});
Comments: I have noticed that it changes the opacity correctly, and
also sets the content of #percentage to 1%, therefore Jquery must be
working. Maybe this can be some kind of general javascript error?
Something that IE interprets differently than FF?
Thank you