What is JavaScript and how is it different from Java Technology?

The JavaScript programming language, developed by Netscape, Inc., is not part of the Java platform. The JavaScript programming language shares some attributes with the Java programming language, but it was developed separately.
For additional information about JavaScript, refer to the mozilla.org page titled What is JavaScript?
JavaScript Error:
JavaScript is disabled, please re-enable it
If you recently upgraded your web browser, the new version of the web browser might have turned off Java Script by default. Please refer to the following instruction on how to turn on JavaScript for your browser:
http://support.microsoft.com/gp/noscript

Source: http://java.com/en/download/faq/java_javascript.xml