Custom Cancel button, Go Back to the web-page you came from ...

Nice to have against the Close or Save button is a beautifull Cancel button. 
A request of a customer this week was to have a link on there intranet 
to a sharepoint custom new page, but without the Sharepoint header and menu. 

So people could add items in a list, but nothing else more. 

On the page the Sharepoint Close/Cancel button returns automatically back to 
the Sharepoint List. But what the customer wanted was that the requester 
returned back to the page where they came from or, 
if the page was openend in a new window, to close the window.

To do this, replace the Sharepoint Close/Cancel button with our own custum buttom.
add a little script in a content Editor webpart to execute the return function (goback).

<input type="button" value="Cancel" name="CancelButton" class="ms-ButtonHeightWidth" onclick="goback();" />

// in content editor webpart:
function goback() {
    // Jumps back
            //history.back();
            if (history.length >0)
            {
                        history.back();
            }
            else
            {
                        window.close();
            }
}