FIXED Issue #17: Positioning global anchor based on the content of the container div

Updated "setGlobalPosition()" to take into account the width of the content when positioning the global anchor on the page. The updated version also considers the width of the scrollbars in the viewport before positioning the anchor.

**Before**
![before](https://cloud.githubusercontent.com/assets/231639/2923205/cee6894a-d70f-11e3-9741-174ec3577bd1.PNG)
 
**After**
![after](https://cloud.githubusercontent.com/assets/231639/2923206/d5be1ad0-d70f-11e3-816a-d1d9114d70ed.PNG)