// JavaScript Document
function secBoard(n)
	{
	 switch (n)
	   {
	    case 1:
		 document.getElementById("ls_1").className="border";
		 document.getElementById("ls_2").className="border3";
		 document.getElementById("ls_3").className="border3";
		 document.getElementById("ls_4").className="border3";
		 document.getElementById("ls_5").className="border2";
		 document.getElementById("ls_all_1").style.display="block";
		 document.getElementById("ls_all_2").style.display="none";
		 document.getElementById("ls_all_3").style.display="none";
		 document.getElementById("ls_all_4").style.display="none";
		 //document.getElementById("pic").background="image/01.gif";		 
		 break
	    case 2:
		 document.getElementById("ls_1").className="border3";
		 document.getElementById("ls_2").className="border";
		 document.getElementById("ls_3").className="border3";
		 document.getElementById("ls_4").className="border3";
		 document.getElementById("ls_5").className="border2";
		 document.getElementById("ls_all_1").style.display="none";
		 document.getElementById("ls_all_2").style.display="block";
		 document.getElementById("ls_all_3").style.display="none";
		 document.getElementById("ls_all_4").style.display="none";
		 //document.getElementById("pic").background="image/02.gif";
		 break
	   case 3:
		 document.getElementById("ls_1").className="border3";
		 document.getElementById("ls_2").className="border3";
		 document.getElementById("ls_3").className="border";
		 document.getElementById("ls_4").className="border3";
		 document.getElementById("ls_5").className="border2";
		 document.getElementById("ls_all_1").style.display="none";
		 document.getElementById("ls_all_2").style.display="none";
		 document.getElementById("ls_all_3").style.display="block";
		 document.getElementById("ls_all_4").style.display="none";
		 //document.getElementById("pic").background="image/03.gif";
		 break
	   case 4:
		 document.getElementById("ls_1").className="border3";
		 document.getElementById("ls_2").className="border3";
		 document.getElementById("ls_3").className="border3";
		 document.getElementById("ls_4").className="border";
		 document.getElementById("ls_5").className="border2";
		 document.getElementById("ls_all_1").style.display="none";
		 document.getElementById("ls_all_2").style.display="none";
		 document.getElementById("ls_all_3").style.display="none";
		 document.getElementById("ls_all_4").style.display="block";
		 //document.getElementById("pic").background="image/04.gif";
		 break
	   
	 }
	}