code: function (hostEl, targetEl, positionStr, appendToBody) {
  
          var positionStrParts = positionStr.split('-');
          var pos0 = positionStrParts[0], pos1 = positionStrParts[1] || 'center';
  
          var hostElPos,
            targetElWidth,
            targetElHeight,
            targetElPos;
  
          hostElPos = appendToBody ? this.offset(hostEl) : this.position(hostEl);
  
          targetElWidth = targetEl.prop('offsetWidth');
          targetElHeight = targetEl.prop('offsetHeight');
  
          var shiftWidth = {
            center: function () {
              return hostElPos.left + hostElPos.width / 2 - targetElWidth / 2;
            },
            left: function () {
              return hostElPos.left;
            },
            right: function () {
              return hostElPos.left + hostElPos.width;
            }
          };
  
          var shiftHeight = {
            center: function () {
              return hostElPos.top + hostElPos.height / 2 - targetElHeight / 2;
            },
            top: function () {
              return hostElPos.top;
            },
            bottom: function () {
              return hostElPos.top + hostElPos.height;
            }
          };
  
          switch (pos0) {
            case 'right':
              targetElPos = {
                top: shiftHeight[pos1](),
                left: shiftWidth[pos0]()
              };
              break;
            case 'left':
              targetElPos = {
                top: shiftHeight[pos1](),
                left: hostElPos.left - targetElWidth
              };
              break;
            case 'bottom':
              targetElPos = {
                top: shiftHeight[pos0](),
                left: shiftWidth[pos1]()
              };
              break;
            default:
              targetElPos = {
                top: hostElPos.top - targetElHeight,
                left: shiftWidth[pos1]()
              };
              break;
          }
  
          return targetElPos;
        }
docs: Provides coordinates for the targetEl in relation to hostEl