Sorry for bieng late,
i tried to disable loading styles with standard skinning
<context-param>
<param-name>org.richfaces.LoadStyleStrategy</param-name>
<param-value>NONE</param-value>
</context-param>
then i tried to open it in specific pages using:
<script type="text/javascript">
window.RICH_FACES_EXTENDED_SKINNING_ON = true;
</script>
but all styles of rich faces disappear and nothing happen by using this script. ?!