In Internet Explorer, click the Tools menu, then click Internet Options. The appearance of the Tools menu varies with the version of Internet Explorer:
In IE versions...
...the Tools menu is a:
6, 7 or 8
tab at the top of the screen
9 and later
gear icon on the right side of the browser window
In the Internet Options window, click the Security tab then click the Custom Level... button.
Scroll down to Scripting, and under Active Scripting select Enable.
Click OK to save this change, then click Yes to confirm it.