function ShowTour(m,n)
{ 
 for(i=1;i<=n;i++) 
 {
  eval("play" + i).style.display="none";
  eval("headword"+i+".style.backgroundImage='url(\"ico\/ico_item_2bg.gif)\';");
 }
 eval("headword"+m+".style.backgroundImage='url(\"ico\/ico_item_1bg.gif)\';");
 eval("play" + m).style.display="";
}