function getBackgroundPoint(vm, size, alignment, chart) {
		// Background Position
		var x = vm.x;
		var y = vm.y;

		var caretSize = vm.caretSize;
		var caretPadding = vm.caretPadding;
		var cornerRadius = vm.cornerRadius;
		var xAlign = alignment.xAlign;
		var yAlign = alignment.yAlign;
		var paddingAndSize = caretSize + caretPadding;
		var radiusAndPadding = cornerRadius + caretPadding;

		if (xAlign === 'right') {
			x -= size.width;
		} else if (xAlign === 'center') {
			x -= (size.width / 2);
			if (x + size.width > chart.width) {
				x = chart.width - size.width;
			}
			if (x < 0) {
				x = 0;
			}
		}

		if (yAlign === 'top') {
			y += paddingAndSize;
		} else if (yAlign === 'bottom') {
			y -= size.height + paddingAndSize;
		} else {
			y -= (size.height / 2);
		}

		if (yAlign === 'center') {
			if (xAlign === 'left') {
				x += paddingAndSize;
			} else if (xAlign === 'right') {
				x -= paddingAndSize;
			}
		} else if (xAlign === 'left') {
			x -= radiusAndPadding;
		} else if (xAlign === 'right') {
			x += radiusAndPadding;
		}

		return {
			x: x,
			y: y
		};
	}
@Helper to get the location a tooltip needs to be placed at given the initial position (via the vm) and the size and alignment