Java to Js calls. Is there a time limit after which netscape.javascript.JSException would be raised?

Question

I am receiving the following exception when calling a JavaScript method from a Java applet using JSObject call mechanism.

netscape.javascript.JSException: Unspecified error invoking method or accessing property "handOver"
    at sun.plugin2.main.client.MessagePassingJSObject.newJSException(Unknown Source)
    at sun.plugin2.main.client.MessagePassingJSObject.waitForReply(Unknown Source)
    at sun.plugin2.main.client.MessagePassingJSObject.call(Unknown Source)
    at Screen.Canvas.Pen.handleCall(Canvas.java:359)

The JavaScript method handOver contains code which may take longer to execute. Is it possible that this exception is raised since there is a time limit for Java to JavaScript calls ? Is there any way to avoid this time-limit?