- // xhr.abort in IE7 is not a native JS function
- // and does not have a call property
- if ( xhr && oldAbort.call ) {
- oldAbort.call( xhr );
+ if ( xhr ) {
+ // oldAbort has no call property in IE7 so
+ // just do it this way, which works in all
+ // browsers
+ Function.prototype.call.call( oldAbort, xhr );