Accessing HTML objects from Applet

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This may be a naive question but can ordinary HTML "objects" (eg Text fields) or Javascripts in a Web Page be accessed from within an Applet in the web page. I know that getAppletContext will return an appletContext pointing to the page and that getApplet will return a named Applet on the page but does this technique (or something similar) also work for non-Java objects. In other words can I make a Java Applet fill in an HTML form or invoke a Javascript.