open window in center of screen in Java Script
function OpenWindow(url,title,width,height) { var left = (screen.width / 2) - (width / 2); var top = (screen.height / 2) - (height / 2); return window.open(url, title, 'toolbar=no, menubar=no, scrollbars=no, resizable=no,width=' + width + ', height=' + height + ', top=' + top + ', left=' + left); }