function resetTriggers(element){
			var triggers = element.__resizeTriggers__,
				expand = triggers.firstElementChild,
				contract = triggers.lastElementChild,
				expandChild = expand.firstElementChild;
			contract.scrollLeft = contract.scrollWidth;
			contract.scrollTop = contract.scrollHeight;
			expandChild.style.width = expand.offsetWidth + 1 + 'px';
			expandChild.style.height = expand.offsetHeight + 1 + 'px';
			expand.scrollLeft = expand.scrollWidth;
			expand.scrollTop = expand.scrollHeight;
		}
Detect Element Resize

https://github.com/sdecima/javascript-detect-element-resize
Sebastian Decima

version: 0.5.3