1. A method for previewing documents on a computer system comprising the steps of: displaying a main document which contains a first hyperlink; displaying a first preview document, which is referred to by said first hyperlink, in response to an indication of said first hyperlink, whilst retaining said display of the main document, wherein said first preview document contains a second hyperlink; displaying a second preview document, which is referred to by said second hyperlink, in response to an indication of said second hyperlink whilst retaining said display of said first preview document and said display of said main document, wherein indicating each hyperlink to the computer system by positioning a pointer over the hyperlink; wherein each preview document is opened in a corresponding preview window, wherein when each preview document is opened, the pointer automatically moves to within the newly opened preview window, wherein said first preview document window remains open as long as the pointer remains in said second preview document window or a window corresponding to a subsequent preview document derived via a subsequent hyperlink in said second preview document, wherein when the pointer is moved from the second preview document window to the first preview document window, the second preview document window closes, wherein when the pointer is moved to a region not in said first preview document window or said second preview document window, or a window corresponding to a subsequent preview document derived via a subsequent hyperlink in said second preview document, both the first and second preview document windows close.
1. A method for previewing documents on a computer system comprising the steps of: displaying a main document which contains a first hyperlink; displaying a first preview document, which is referred to by said first hyperlink, in response to an indication of said first hyperlink, whilst retaining said display of the main document, wherein said first preview document contains a second hyperlink; displaying a second preview document, which is referred to by said second hyperlink, in response to an indication of said second hyperlink whilst retaining said display of said first preview document and said display of said main document, wherein indicating each hyperlink to the computer system by positioning a pointer over the hyperlink; wherein each preview document is opened in a corresponding preview window, wherein when each preview document is opened, the pointer automatically moves to within the newly opened preview window, wherein said first preview document window remains open as long as the pointer remains in said second preview document window or a window corresponding to a subsequent preview document derived via a subsequent hyperlink in said second preview document, wherein when the pointer is moved from the second preview document window to the first preview document window, the second preview document window closes, wherein when the pointer is moved to a region not in said first preview document window or said second preview document window, or a window corresponding to a subsequent preview document derived via a subsequent hyperlink in said second preview document, both the first and second preview document windows close. 5. A method according to claim 1 further comprising the steps of: in response to a selection of a displayed preview document being received by the computer system, substituting the selected preview document for the main document; and removing from display all preview documents.