dom-helpers | tiny , extremely modular , DOM helper library for IE9+

Mostly just naive wrappers around common DOM API inconsistencies, Cross browser work is minimal and mostly taken from jQuery. This library doesn't do a lot to normalize behavior across browsers, it mostly seeks to provide a common interface, and eliminate the need to write the same damn if (ie9) statements in every project.
dom-helpers ownerDocument(element): returns the element's document owner ownerWindow(element): returns the element's document window activeElement: return focused element safely querySelectorAll(element, selector): optimized qsa, uses getElementBy{Id|TagName|ClassName} if it can. contains(container, element) height(element, useClientHeight) width(element, useClientWidth) matches(element, selector) offset(element) -> { top: Number, left: Number, height: Number, width: Number} offsetParent(element): return the parent node that the element is offset from position(element, [offsetParent]: return "offset" of the node to its offsetParent, optionally you can specify the offset parent if different than the "real" one scrollTop(element, [value]) scrollLeft(element, [value]) scrollParent(element) addClass(element, className) removeClass(element, className) hasClass(element, className) toggleClass(element, className) style(element, propName) or style(element, objectOfPropValues) getComputedStyle(element) -> getPropertyValue(name) animate(node, properties, duration, easing, callback) programmatically start css transitions transitionEnd(node, handler, [duration], [padding]) listens for transition end, and ensures that the handler if called even if the transition fails to fire its end event. Will attempt to read duration from the element, otherwise one can be provided addEventListener(node, eventName, handler, [options]): removeEventListener(node, eventName, handler, [options]): listen(node, eventName, handler, [options]): wraps addEventlistener and returns a function that calls removeEventListener for you filter(selector, fn): returns a function handler that only fires when the target matches or is contained in the selector ex: on(list, 'click', filter('li > a', handler)) requestAnimationFrame(cb) returns an ID for canceling cancelAnimationFrame(id) scrollbarSize([recalc]) returns the scrollbar's width size in pixels scrollTo(element, [scrollParent])