19. A non-transitory computer-readable recording medium recording a program for causing a document viewing device to perform a process of displaying document data divided for each page, said document viewing device including an input device for accepting a user operation, said program causing said document viewing device to perform the steps of: generating a viewing history of a document by a user based on said user operation performed for a page displayed on a display device; evaluating relevance to an object displayed on said display device and searching for a page relevant to the object displayed on said display device from pages of said document data; determining based on said viewing history whether the relevant page searched is checked or unchecked; generating a shortcut linked to the relevant page searched and determined to be unchecked; and displaying the shortcut together with the displayed object on the display device.
19. A non-transitory computer-readable recording medium recording a program for causing a document viewing device to perform a process of displaying document data divided for each page, said document viewing device including an input device for accepting a user operation, said program causing said document viewing device to perform the steps of: generating a viewing history of a document by a user based on said user operation performed for a page displayed on a display device; evaluating relevance to an object displayed on said display device and searching for a page relevant to the object displayed on said display device from pages of said document data; determining based on said viewing history whether the relevant page searched is checked or unchecked; generating a shortcut linked to the relevant page searched and determined to be unchecked; and displaying the shortcut together with the displayed object on the display device. 21. The non-transitory computer-readable recording medium according to claim 19 , wherein said document data includes information specifying a prescribed object of said document data, said step of generating the viewing history includes the step of recording information specifying a position of said document data designated by said user operation as said viewing history based on said user operation performed for the page displayed on said display device, the step of determining whether the relevant page searched is checked or unchecked includes the step of determining whether the object included in the relevant page searched is checked or unchecked, and extracting the relevant page searched whose object is determined to be unchecked, and said step of extracting the page for which it is determined that the object is unchecked includes the step of determining based on said viewing history whether each said prescribed object is checked or unchecked by said user, to extract a page including said prescribed object determined as being unchecked from pages each searched for as being relevant to the object displayed on said display device.