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diff --git a/src/javax/media/j3d/WakeupOnElapsedTime.java b/src/javax/media/j3d/WakeupOnElapsedTime.java
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+++ b/src/javax/media/j3d/WakeupOnElapsedTime.java
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+/*
+ * Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Sun designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Sun in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+package javax.media.j3d;
+
+/**
+ * Class specifying a wakeup when a specific number of milliseconds
+ * have elapsed.
+ *
+ */
+public final class WakeupOnElapsedTime extends WakeupCriterion {
+
+    long wait;
+
+    /**
+     * This represents the triggered time
+     */
+    long triggeredTime;
+
+    /**
+     * Constructs a new WakeupOnElapsedTime criterion.
+     * @param milliseconds the number of milliseconds to the wakeup.  A value
+     * of zero or less will cause an IllegalArgumentException to be thrown.
+     */
+    public WakeupOnElapsedTime(long milliseconds) {
+	if(milliseconds <= 0L)
+	    throw new IllegalArgumentException(J3dI18N.getString("WakeupOnElapsedTime0"));
+	this.wait = milliseconds;
+    }
+
+    /**
+     * Retrieve the WakeupCriterion's elapsed time value that was used when
+     * constructing this object.
+     * @return the elapsed time specified when constructing this object
+     */
+    public long getElapsedFrameTime(){
+	return wait;
+    }
+
+    /**
+     * This is a callback from BehaviorStructure. It is
+     * used to add wakeupCondition to behavior structure.
+     */
+    @Override
+    void addBehaviorCondition(BehaviorStructure bs) {
+	this.triggeredTime = wait + J3dClock.currentTimeMillis();
+	behav.wakeupArray[BehaviorRetained.WAKEUP_TIME_INDEX]++;
+	behav.wakeupMask |= BehaviorRetained.WAKEUP_TIME;
+	VirtualUniverse.mc.timerThread.add(this);
+    }
+
+
+    /**
+     * This is a callback from BehaviorStructure. It is
+     * used to remove wakeupCondition from behavior structure.
+     */
+    @Override
+    void removeBehaviorCondition(BehaviorStructure bs) {
+	behav.wakeupArray[BehaviorRetained.WAKEUP_TIME_INDEX]--;
+	if (behav.wakeupArray[BehaviorRetained.WAKEUP_TIME_INDEX] == 0) {
+	    behav.wakeupMask &= ~BehaviorRetained.WAKEUP_TIME;
+	}
+	VirtualUniverse.mc.timerThread.remove(this);
+    }
+
+    /**
+     * This is invoked when Behavior processStimulus can't schedule
+     * to run because behav.active = false. In this case we must
+     * reinsert the wakeupOnElapseTime condition back to the
+     * TimerThread wakeup heap
+     */
+    @Override
+    void reInsertElapseTimeCond() {
+	super.reInsertElapseTimeCond();
+	this.triggeredTime = wait + J3dClock.currentTimeMillis();
+	VirtualUniverse.mc.timerThread.add(this);
+    }
+
+
+    /**
+     * Perform task in addBehaviorCondition() that has to be
+     * set every time the condition met.
+     */
+    @Override
+    void resetBehaviorCondition(BehaviorStructure bs) {
+	this.triggeredTime = wait + J3dClock.currentTimeMillis();
+	VirtualUniverse.mc.timerThread.add(this);
+    }
+}