function m_on(pic,newsrc){
	 document.getElementById("m_"+pic).src=newsrc;
	 document.getElementById("l_"+pic).src="/common/img/m_l.gif";
	 document.getElementById("r_"+pic).src="/common/img/m_r.gif";
 	 document.getElementById("v_"+pic).src="/common/img/m_v_on.gif";
	}
	function m_off(pic,newsrc){
	 document.getElementById("m_"+pic).src=newsrc;
	 document.getElementById("l_"+pic).src="/common/img/sp.gif";
	 document.getElementById("r_"+pic).src="/common/img/sp.gif";
  	 document.getElementById("v_"+pic).src="/common/img/m_v.gif";
	}