Enabling and disabling JavaScript
In Firefox, you can configure whether JavaScript in web pages is permitted to execute or not. To allow JavaScript in Firefox:
- At the top of the Firefox window, click on the Firefox button ( menu in Windows XP) and then click On the menu bar, click on the menu and select At the top of the Firefox window, click on the menu and select At the top of the Firefox window, click on the menu and select On the menu bar, click on the menu and select At the top of the Firefox window, click on the menu and select
- In the OptionsPreferences window, select the panel.
- Enable JavaScript: Select this option to permit JavaScripts to execute on your computer.
- To change advanced settings, click Advanced....
- Click OK to close the Options windowClick Close to close the Preferences windowClose the Preferences window.
Advanced JavaScript settings
Through the Advanced JavaScript Settings window, you can configure the permissions for JavaScripts.
- Move or resize existing windows: To prevent JavaScripts from changing the position or size of existing windows, deselect this option.
- Raise or lower windows: This option allows sites to place windows below or above existing windows.
- Disable or replace context menus: When you right-click an item, a sub-menu may appear. This menu, called a "context menu," can be disabled through JavaScripts. To prevent them from disabling context menus, deselect this option.
- Hide the status bar: The status bar is the area at the bottom of each window that indicates your current location and the destination locations of hyperlinks. Through JavaScripts, the status bar can be hidden from display, which prevents you from identifying locations of pop-up windows. To prevent hiding the status bar, deselect this option.
- Change status bar text: Through JavaScript, websites can add their own text to the status bar, which prevents you from identifying locations. To disable overwriting the status bar, deselect this option.
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Enable JavaScript 
