I agree with Oskar.
But, your problem is just that `this` in the event handler refers to the element, not to your class. You could do it like this: http://paste.mootools.net/f5003100e
I agree with Oskar.
But, your problem is just that `this` in the event handler refers to the element, not to your class. You could do it like this: http://paste.mootools.net/f5003100e