Sets or gets the position of jqxTooltip.
                            
                            Possible Values:
                            
                            'top' - the tooltip shows above the host element
                            'bottom' - the tooltip shows below the host element
                            'left' - the tooltip shows at the left of the host element
                            'right' - the tooltip shows at the right of the host element
                            'top-left' - the tooltip shows at the top-left side of the host element
                            'bottom-left' - the tooltip shows at the bottom-left side of the host element
                            'top-right' - the tooltip shows at the top-right side of the host element
                            'bottom-right' - the tooltip shows at the bottom-right side of the host element
                            'absolute' - the tooltip shows at an absolute position on screen, defined by the coordinate properties absolutePositionX and absolutePositionY
                            'mouse' - the tooltip shows after a short period of time at the position of the mouse cursor
                            'mouseenter' - the tooltip shows where the mouse cursor has entered the host element
                            'default' - the tooltip shows at the bottom-right side of the host element but does not make use of the left and top properties
                            Code examples
                            
                                Set the position property.
                            
                            $('#jqxTooltip').jqxTooltip({ position: 'top' });
                            
                                Get the position property.
                            
                            var position = $('#jqxTooltip').jqxTooltip('position');