Internet Explorer crashes on faulty JavaScript

When using Password Policy in Internet Explorer 7 the JavaScript crashes.

This is due to the fact that Internet Explorer apparently can't handle trailing comma's in an array. See http://stackoverflow.com/a/5139232.

This will break

var settings = {
    'foo'  : oof,
    'bar' : rab,
};

This will work
Notice the missing trailing comma

var settings = {
    'foo'  : oof,
    'bar' : rab
};