Absolute Position of Element in Javascript

absolutePosition.js

if (typeof absolutePosition == "undefined") {
  // Discovered here: http://stackoverflow.com/a/32623832/867154
  // Many thanks to @RoboCat!
	function absolutePosition (el) {
		
		var found, left = 0, top = 0, width = 0, height = 0, offsetBase = absolutePosition.offsetBase;
		
		if (!offsetBase && document.body) {
			offsetBase = absolutePosition.offsetBase = document.createElement('div');
			offsetBase.style.cssText = 'position:absolute;left:0;top:0';
			document.body.appendChild(offsetBase);
		}
		
		if (el && el.ownerDocument === document && 'getBoundingClientRect' in el && offsetBase) {
			var boundingRect = el.getBoundingClientRect();
			var baseRect 	 = offsetBase.getBoundingClientRect();
			found 			 = true;
			left 			 = boundingRect.left - baseRect.left;
			top 			 = boundingRect.top - baseRect.top;
			width 			 = boundingRect.right - boundingRect.left;
			height 			 = boundingRect.bottom - boundingRect.top;
		}
		
		return {
			found: found,
			left: left,
			top: top,
			width: width,
			height: height,
			right: left + width,
			bottom: top + height
		};
	}

}