diff --git a/js/ref/liveconnect/classes/netscape/javascript/JSRunnable.java b/js/ref/liveconnect/classes/netscape/javascript/JSRunnable.java
new file mode 100644
index 000000000000..d9dae63a2e82
--- /dev/null
+++ b/js/ref/liveconnect/classes/netscape/javascript/JSRunnable.java
@@ -0,0 +1,31 @@
+package netscape.javascript;
+
+/**
+ * Runs a JavaScript object with a run() method in a separate thread.
+ */
+public class JSRunnable implements Runnable {
+	private JSObject runnable;
+
+	public JSRunnable(JSObject runnable) {
+		this.runnable = runnable;
+		synchronized(this) {
+			new Thread(this).start();
+			try {
+				this.wait();
+			} catch (InterruptedException ie) {
+			}
+		}
+	}
+	
+	public void run() {
+		try {
+			runnable.call("run", null);
+			synchronized(this) {
+				notifyAll();
+			}
+		} catch (Throwable t) {
+			System.err.println(t);
+			t.printStackTrace(System.err);
+		}
+	}
+}