1. An operating method of a mobile terminal, the operating method comprising: bookmarking a plurality of websites using a touch screen of the mobile terminal, and storing a plurality of images respectively corresponding to the bookmarked plurality of websites in a memory of the mobile terminal; displaying on the touch screen an image array including the stored plurality of images in such a manner to create a sense of distance when a bookmark viewing menu is selected, wherein the image array is displayed in a shape of a tree classified by at least two branches according to attributes of the plurality of images, the attributes comprising date information of bookmarking the plurality of websites and route information of accessing the plurality of websites; displaying, a message indicating how the plurality of images in the image array is arranged, along with the image array when the image array cannot be displayed as a whole on the touch screen, wherein the message comprises text-based path information that describes a relative position of a specific image corresponding to a specific website of the bookmarked websites in the image array, the text-based path information comprising at least one of direction information, distance information and order information from a reference point of the image array to the specific image; and if a drag signal is input via the touch screen, changing at least one of the sizes of the images in the image array, at least one image in the image array, and an arrangement of the images in the image array, according to at least one of direction and distance corresponding to the input drag signal, wherein the bookmarking of the plurality of websites comprises: displaying a web page provided by the respective website on the touch screen; displaying a bookmark execution menu on the touch screen if a sweeping signal for the web page displayed on the touch screen is detected; executing a bookmark function via a manipulation of the bookmark execution menu; and displaying, on the touch screen, an icon indicating that the bookmark function is being currently executed.