html frame structure, I want to add a return button in the upper frame to let the page in the lower frame return to the previous page_html/css_WEB-ITnose

Similar to this returns ,
is not returning to this page, but to returning to other pages in the frame, what should I do? What about writing?

Reply to discussion (solution)

javascript:self.history.back(-1);
javascript:parent.document.getElementById( 'IframeID').widnows.history.back();
try