Is there any way to add/remove classes atEnter, atLeave, and atActive?

[Lathryx]

I'm attempting to add/remove a .hide class:

.hide {
    margin: 0; 
    padding: 0; 
    width: 0; 
    height: 0; 
    opacity: 0; 
}

Which essentially allows other elements to pass over the corresponding element in its atLeave state, of course given that element has this class. Then, on this element's atEnter stage, I must promptly remove this class.

Is there any known way of doing this?

[Lathryx]

I've also posted my problem on StackOverflow, and the app itself can be found here.