// JavaScript Document

  function xs(n){
       for(i=1;i<=14;i++)
	 document.getElementById("mainnavlist"+i).className="normal_nav";
	switch (n){
	case n:
	  {document.getElementById("mainnavlist"+n).className="active_nav";
	 
	 break;}
	 default:
	    {
		  document.getElementById("mainlist"+n).className="active_nav";
	   }
			 }
	
     for(i=1;i<=14;i++)
	 document.getElementById("secondlist"+i).style.display="none";
	 document.getElementById("secondlist"+n).style.display="block";
  }