another error when i cancel the update and change the page this function have error!!
How to fix this ???
function
FTB_RemoveEvent(obj, evType, fn, useCapture) {
if (useCapture==undefined) useCapture=true;
if (obj.removeEventListener) { <- this is the debug stop
obj.removeEventListener(evType, fn, useCapture);
} else if (obj.detachEvent) {
obj.detachEvent('on' + evType, fn);
}
};