added cooja applet target

tools/cooja/build.xml

@@ -93,6 +93,15 @@ The COOJA Simulator
     </java>
   </target>
 
+  <target name="run_applet" depends="init, compile, copy configs">
+    <exec executable="appletviewer" dir="${build}">
+      <arg value="-J-Djava.security.policy=cooja.policy"/>
+      <arg value="cooja.html"/>
+      <env key="LD_LIBRARY_PATH" value="."/>
+      <env key="CLASSPATH" path="${build}"/>
+    </exec>
+  </target>
+	
   <target name="jar" depends="clean, init, compile, copy configs">
     <mkdir dir="${dist}"/>
     <jar destfile="${dist}/cooja.jar" basedir="${build}">