Scroll side bar doesnt work

Question

in my yahoo and in http://hiddenobjects.playdom.com/games/mistwood/play?lv=1392272664#/home<br />
what should i do?

Answer 1

Hi olga, I don't know whether it is relevant, but when sites open a new window, they can limit the features of that window. One of the options is to prevent scroll bars from appearing. Every page you visit in that window will have the same restriction.
You can change a setting so that scroll bars cannot be stripped from pop-up windows. Here's how:
(1) In a new tab, type or paste '''about:config''' in the address bar and press Enter. Click the button promising to be careful.
(2) In the search box above the list, type or paste '''open_''' and pause while the list is filtered
(3) Double-click the '''dom.disable_window_open_feature.scrollbars''' preference to switch it from false to true. In other words, normally this option is available, but now Firefox will disable it.
Sometimes when you're using content designed for a larger screen, one way to make additional space available is to use Firefox's full screen mode. You can press the F11 key to switch the current window to full screen view or back to normal. To access the tab bar in full screen view, slide your mouse pointer all the way to the top of the screen and the tab bar should slide down into view.