How Do You Enable Java Script?

To Enable JavaScript Follow These Instructions (or similar for other browser versions)
You may need to restart browser for changes to take effect

Internet Explorer 4.x, 5.x, 6.x and 7.x For Windows
tools menu => internet options => security tab => internet zone => custom level button => check enable active scripting => (enable other scripting options if desired)

Internet Explorer 5.x For Mac OS X
explorer menu => preferences => arrow next to web browser => web content => check enable scripting under active content

Internet Explorer 5.x For Mac OS 9
edit menu => preferences => arrow next to web browser => web content => check enable scripting under active content

Internet Explorer 3.x For Windows
view menu => security => check enable java programs

Mozilla Firefox 2.x For Windows
tools menu => options => content icon => check enable javascript

Mozilla Firefox 1.5 For Windows
tools menu => options => content => check enable java and enable javascript => advanced button => check boxes under allow scripts to section that you want to allow

Mozilla Firefox 1.0 For Windows
tools menu => options => web features from list on left => check enable java and enable javascript => check the boxes under allow scripts to section that you want to allow

Mozilla Firefox For Mac OS X
firefox menu => preferences => check enable java and enable javascript

Mozilla Before Firefox For Windows
mozilla menu => preferences => double click advanced from category list on left => check enable java and enable native object scripting => expand advanced in category column on left => scripts & plug-ins => check navigator under enable javascript for

Mozilla before Firefox For Mac OS X
mozilla menu => preferences => double click advanced from category list on left => check enable java => expand advanced in category column on left => scripts & plug-ins => check navigator under enable javascript for

Netscape 8.x For Windows
tools menu => options => site controls from list on left => master settings => check enable java => check enable javascript

Netscape 7.x For Windows
edit menu => preferences => double click advanced from category list on left => scripts and plugins => check enable java and enable native object scripting => expand advanced in category column on left => scripts & plugins => check navigator under enable javascript for

Netscape 7.x For Mac OS X
netscape menu => preferences => advanced from category list on left => check enable java => expand advanced in category column on left => scripts & plug-ins => check navigator under enable javascript for

Netscape Communicator, Navigator 4.x and Netscape 6.x For Windows and Mac
edit menu => preferences => advanced from category list on left => check the enable java and enable javascript

Netscape Navigator 3.0 For Windows and Mac
options menu => network preferences => languages tab => check enable java and enable javascript

Netscape Navigator 2.x For Windows and Mac
options menu => security preferences => general tab => check enable java and enable javascript

Opera 5.x, 6.x, 7.x, 8.x and 9.x Quick Preferences For Windows
file menu => quick preferences => enable javascript

Opera 8.x and 9.x For Windows
tools menu => preferences => content in the Preferences list => check enable javascript => javascript options button => check the boxes that you want to allow

Opera 7.x For Windows
tools menu => preferences => multimedia in the preferences list => check enable javascript => javascript options => check boxes that you want to allow

Opera 6.x For Windows
file menu => preferences => multimedia => preferences list. => check enable javascript

AOL 4.0 and 5.0 For Windows
preferences => click www => security tab => custom button => settings => check enable for active scripting under scripting

AOL 3.0 For Windows
preferences => security => check enable java programs

Safari Public Beta 2 For Mac OS X
safari menu => preferences => security => check enable java and enable javascript

To enable java script, which is sometimes called as JScript, follow the given instructions. Note that Java script and java are two completely different things, so ensure that you are looking for the right language.

In the Internet Explorer 3.X version, go to options in the View menu, and then click on the Security option. Tick the box next to Enable Java Programs, and then click on OK and then Reload.

If you Explorer is of the 4.X version, then go to Internet Options in the View menu. Click on the Security Tab, then Custom, and Settings. Scroll down to find the Scripting option. Click the box next to Enable Active Scripting, and then click on Ok and Reload.

For the Internet Explorer version 5.X, follow the same procedure as given for version 4.X.

You may find your answer here or here, hope it helps.