How to force ie8 to repaint after adding a class to a dom element

Question

In ie8 if elements don\'t \'repaint\' with the associated css when you change the classname, how can you force the browser to refresh and not kill ie8 performance?

This

Answer 1

Fire a move or resize event on it.

var ie8 = whateverYouUseToDetectIE();
var element = document.getElementById("my-element");
element.className += " new-class";
if (ie8) {
    element.fireEvent("resize");
}