javascript - IE9 - jQuery - "SCRIPT11: The operation attempted to access data outside the valid range" -

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i'm using simple jquery plugin creates unique fingerprint each user can track/recognize users coming specific referral url.

it works fine everywhere except internet explorer 9 (yes, works in ie7 & ie8, though web page looks goofy).

the error i'm receiving is:

script11: operation attempted access data outside valid range

the code below (error occurs on line 21, column 7). i'm go through , comment out each of entities see if it's 1 of them in particular that's causing error.

thanks!

( function($) {    // calling `jquery.fingerprint()` return md5 hash, i.e. said   // fingerprint.    $.fingerprint = function() {      // function, `_raw()`, uses several browser details     // available js here build string, namely...     //     // * user agent     // * screen size     // * color depth     // * timezone offset     // * sessionstorage support     // * localstorage support     // * list of installed plugins (we're using names,     //    descriptions, mime types , file name extensions here)     function _raw() {       // string return value.       return [         navigator.useragent,         [ screen.height, screen.width, screen.colordepth ].join("x"),         ( new date() ).gettimezoneoffset(),         !!window.sessionstorage,         !!window.localstorage,         $.map( navigator.plugins, function(p) {           return [             p.name,             p.description,             $.map( p, function(mt) {               return [ mt.type, mt.suffixes ].join("~");             }).join(",")           ].join("::");         }).join(";")       ].join("###");     }      // `_md5()` computes md5 hash using [md5-js](http://github.com/wbond/md5-js/).     function _md5() {       if ( typeof window.md5 === "function" ) {         // return value hashed fingerprint string.         return md5( _raw() );       }       else {         // if `window.md5()` isn't available, error thrown.         throw "md5 unavailable, please http://github.com/wbond/md5-js/";       }     }      // and, since i'm lazy, calling `$.fingerprint()` return hash     // right away, without need other calls.     return _md5();   }  })(jquery);


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