function onClick_tab(idx) {
	  
    count = 3;
    for( i=1; i<=count; i++) {
      
      t = document.getElementById("r"+i+"-div");
      l = document.getElementById("p"+i+"-li");
      if (i==idx)
      {
        t.style.display="block";
        l.className="on"; 
      }
      else 
      {
        t.style.display="none";
        l.className="";
      }

    }
  }