Select Internet Options from the Tools Menu
Select the Security tab and click on the Custom Level... button.
Scroll down to Scripting and Enable Active Scripting. Click OK.
Select Preferences from the Edit menu. Click on the Advanced Category. Then make sure the Enable Javascript box is checked.
Select Preferences from the Edit menu. Open up the Advanced Category. Click on Scripts & Plugins. Then make sure the Enable Javascript for Navigator box is checked. Make sure the first 3 checkboxes in the white panel are checked, and the last 2. But having all checked in the panel would be helpful.