function newwindow(name) 
{ 
window_width = 400 ;
window_height = 460 ;
str = 'left=' + (screen.width - window_width)/2 ;
str = str + ',top=' + (screen.height - window_height)/2 ;
str = str + ',width=' + window_width + ',height=' + window_height + ',scrollbars=yes, resizable=yes';
win = window.open(name, "Information", str); 
win.focus() ;
}