An image display device in which options for performing functions of the image display device are hierarchized, comprising: an image display unit that displays the options; a capacitance type touch panel that is disposed on the surface of the image display unit; a signal processing unit that detects the capacitance varying with respect to an input operation on the touch panel; and a control unit that performs a function corresponding to the input operation, characterized in that the control unit is operable to set sensitivity of the touch panel to high sensitivity and determine whether an operator's finger is approached to the touch panel by detecting the capacitance varying on the basis of the high sensitivity, and in response to detecting that the operator's finger is approached to the touch panel, the control unit is operable to change the sensitivity of the touch panel to low sensitivity lower than the high sensitivity and display a high-level option (54 to 57) on the image display unit, and when displaying the high-level option on the image display unit, the control unit is operable to determine whether an input operation of pressing the high-level option with the operator's finger is detected by detecting the capacitance varying on the basis of the low sensitivity, and in response to detecting that the high-level option is pressed, the control unit is operable to set a display area for displaying a low-level option to a size corresponding to a distance by which the operator's finger moves over the touch panel while keeping on pressing the touch panel and display the low-level option corresponding to a function assigned to the pressed high level option in the display area. an image display unit that displays the options; a capacitance type touch panel that is disposed on the surface of the image display unit; a signal processing unit that detects the capacitance varying with respect to an input operation on the touch panel; and a control unit that performs a function corresponding to the input operation, characterized in that the control unit is operable to set sensitivity of the touch panel to high sensitivity and determine whether an operator's finger is approached to the touch panel by detecting the capacitance varying on the basis of the high sensitivity, and in response to detecting that the operator's finger is approached to the touch panel, the control unit is operable to change the sensitivity of the touch panel to low sensitivity lower than the high sensitivity and display a high-level option (54 to 57) on the image display unit, and when displaying the high-level option on the image display unit, the control unit is operable to determine whether an input operation of pressing the high-level option with the operator's finger is detected by detecting the capacitance varying on the basis of the low sensitivity, and in response to detecting that the high-level option is pressed, the control unit is operable to set a display area for displaying a low-level option to a size corresponding to a distance by which the operator's finger moves over the touch panel while keeping on pressing the touch panel and display the low-level option corresponding to a function assigned to the pressed high level option in the display area.