code: function(node, all, altRegion) {
          return DOM.inRegion(node, DOM.viewportRegion(node), all, altRegion);
              
      }
docs: Check if any part of this element is in the viewport
  @method inViewportRegion
  @for DOM
  @param {HTMLElement} element The DOM element.
  @param {Boolean} all Should all of the node be inside the region
  @param {Object} altRegion An object literal containing the region for this node if we already have the data (for performance i.e. DragDrop)
  @return {Boolean} True if in region, false if not.