MapBase.hitTest Method
        
 Determines what data control element is represented at the specified position.
 
         
        Parameters
        
            - offsetX
            
 
            - 
                
Type: Number
The position to test in pixels relative to the left edge of the chart. 
            - offsetY
            
 
            - 
                
Type: Number
The position to test in pixels relative to the top edge of the chart. 
            - element
            
 
            - 
                
Type: Element
The DOM element located at the position, if available.
Optional: True