Alex,
>As Cathi said, you can redirect (or Server.Transfer) to go to the previous page. When the previous page is not known, I use the following in my entry page, as I do not know which of the company menus (more than one) they came from to my place:
>

>< script language="JavaScript" >
>function GoBack()
>{
>	history.back(-1);
>}
>< /script >
>

Just adding to your point about calling the history from client side JavaScript. You can also call the window history from the server side using JavaScript as well.

Response.Write("<script language = javascript>window.history.back(1)</script>");