The most likely cause is that Javascript is not enabled on your browser.
| Internet Explorer for Windows | From the "Tools" menu of IE, select the "Internet Options". Click on the "Security" tab. Make sure the "Internet" globe icon is highlighted. Click on the "Custom Level..." button to bring up the security options for your browser. Search through the menu for the "Active scripting" option. Make sure "Enable" is selected. Click the "OK" button. Close this window and click the "Refresh (F5)" button of the page requiring Javascript. |
| Firefox for Windows | From the "Tools" menu of Firefox, select "Options...". Select the "Content" tab and check the "Enable JavaScript" option. Click "OK" to close this window, then click the "Reload current page" button of the page requiring Javascript. |
| Safari for Macintosh | Go to and select the "Preferences..." option in the "Safari" menu. Click on the "Security" icon in the top row of preference options. Under the "Web Content:" category, make sure the "Enable JavaScript" box is checked. Close this window and click the "Reload" button of the page requiring Javascript. |
| Safari for Windows | From the pull down menu that looks like a gear, select the "Preferences..." option. Click on the "Security" icon in the top row of preference options. Under the "Web Content:" category, make sure the "Enable JavaScript" box is checked. Close this window and click the "Reload" button of the page requiring Javascript. |
| Firefox for Macintosh | Choose "Preferences..." under Firefox's menu bar. Select the "Content" tab and check the "Enable JavaScript" option. Close this window and click the "Reload current page" button of the page requiring Javascript. |