Question

when used window.open() method in IE7 then how can i hide title bar

Answer 1

window.open('mypopup.html','winname','directories=no, titlebar=no, toolbar=no, location=no, status=no, menubar=no, scrollbars=no, resizable=no, width=400, height=350');

That only works in older browsers. Modern browsers won’t let you remove the title bar because then there’s no way to close the window.