Unexpected Token BCE0043

Hello, I'm using this code to determine what the user will be playing my game under (operating system and browser type). I'm seeing an "Unexpected Token: mac. (BCE0043)" and this is true for win and ie. I'm also seeing "Unexpected Token: ,. (BCE0043)" on the same lines and it's asking me for semicolons. Can anyone help me? If I do what it says I still get errors without any clues as to fixing them. Thank you very much!

 var ua = function() {
                 var a = nav.userAgent;
                 var p = nav.platform;
                 var ua = {
                         w3 : typeof doc.getElementById != "undefined" && typeof doc.getElementsByTagName != "undefined" && typeof doc.createElement != "undefined",
                         win : p ? /win/i.test(p) : /win/i.test(a),
                         mac : p ? /mac/i.test(p) : /mac/i.test(a),
                         ie : /msie/i.test(a) ? parseFloat(a.replace(/^.*msie ([0-9]+(\.[0-9]+)?).*$/i, "$1")) : false,
                         ff : /firefox/i.test(a),
                         ch : /chrome/i.test(a),
                         sf : /safari/i.test(a),
                         wk : /webkit/i.test(a) ? parseFloat(a.replace(/^.*webkit\/(\d+(\.\d+)?).*$/i, "$1")) : false,
                         x64 : /win64/i.test(a) && /x64/i.test(a),
                         moz : /mozilla/i.test(a) ? parseFloat(a.replace(/^.*mozilla\/([0-9]+(\.[0-9]+)?).*$/i, "$1")) : 0
                 };