code: function(els,baseBox) {
  		var boxes = [];
  		for (var i=0; i<els.length; i++) {
  			var el = els[i];
  			var box = [
  				el.offsetLeft,
  				el.offsetTop,
  				el.offsetLeft + el.offsetWidth,
  				el.offsetTop  + el.offsetHeight
  			];
  			box = this._offsetBoxes(box, baseBox);
  			boxes.push( box );
  
  			if (el.children.length) {
  				var parentBox = baseBox;
  				if (!isMSIE8) {
  					var positionStyle = window.getComputedStyle(el).position;
  					if (positionStyle === 'absolute' || positionStyle === 'relative') {
  						parentBox = box;
  					}
  				}
  				boxes = boxes.concat( this._getRelativeBoxes(el.children, parentBox) );
  			}
  		}
  		return boxes;
  	}
docs: Much like _getIconBox, but works for positioned HTML elements, based on offsetWidth/offsetHeight.