• From the browser's Tools menu select "Internet Options"
• Select the Security tab.
• Pick the "Internet zone" icon.
• Push the "Custom Level." button.
• Scroll down the Settings list to the Scripting item. (You may need to double-click on icons to expand lists.
• Under the "Active scripting" item, choose the Enable radio button.
• Push OK and Yes to confirm and close the Security Settings
• Dialog box, then OK again to close the Internet Options dialog box.
• Refresh the current page.

2. To delete cookies in Internet Explorer 6.x and above:

• Run Internet Explorer.
• Open the Tools menu.
• Select Internet Options to open the Dialog box.
• Click the "Delete Cookies" button.
• Click OK.

3. To enable Javascript in Mozilla Firefox 3.x and above:

• Open the option preferences.
• For Windows Users:
  • From the menu bar select Tools >> Options.
• For Macintosh Users:
  • From the Firefox menu, select Preferences.
• From the Options window, select the Content icon. Check the "Load images automatically", "Enable JavaScript" and "Enable Java" checkboxes.
• Reload the current page.

4. To enable Javascript in Opera 9.x and above

• Open preferences
• For Windows Users:
• From the menu bar select Tools >> Preferences.
• For Macintosh Users:
• From the Firefox menu, select Preferences.
• From the Preferences window, select the Advanced tab.
• Inside the left-hand pane, pick the Content item.
• Check the "Enable JavaScript", "Enable Java" and "Enable plug-ins" checkboxes.
• Push the OK button to close the Preferences dialog box.
• Reload the current page.

5. To delete cookies in Opera 9.x and above:

• Open the Tools menu.
• Select Preferences to open Dialog box.
• Open the Advanced tab.
• Select "Cookies".
• Click the "Manage Cookies" button.
• Select one or more cookies you want to delete and click the "Delete" button.

6. To delete cookies in Google Chrome:

• Open Google Chrome.
• Click the wrench icon in the upper-right corner of the toolbar and select "Options".
• Select the "Under the Hood" tab.
• Scroll down to the Security section.
• Click the Show cookies button.
• In the Cookies window, select the desired cookie and click the "Remove" button, if you need to delete all cookies then click "remove all".