... sensor out there. It's truly event-based. Automatically discovers new DOM elements. No need to call javascript manually. All CSS selectors available. It uses the normal attribute selector. Min-width, min-height, max-width and max-height supported. It works for all layout modifications, HTML (innerHTML etc), inline styles, DOM mutation, CSS3 transitions, fluid layout changes (parent changes too), pseudo classes (:hover etc), window resizes, etc.