A mobile terminal is presented. The mobile terminal includes a touchscreen configured to display at least one or more data link items, the touchscreen receiving an input for a preview of a first data link item from the at least one or more data link items, and a controller configured to control the touchscreen to display a first display window for displaying a first data associated with the first data link item on a predetermined region of the touchscreen after receiving the input for the preview of the first data link item, and further configured to adjust a size for the first display window after receiving an input associated with a size adjusting signal.