// JavaScript Document
function showbt1() {
	showTab1() ;
	showSub1() ;
	document.body.focus();
}
function showbt2() {
	showTab2() ;
	showSub2() ;
	document.body.focus();
}
function showTab1() {
	document.getElementById("cu_1").className = "cu1" ;
	document.getElementById("fd_1").className = "fd1" ;
}
function showTab2() {
	document.getElementById("cu_1").className = "cu2" ;
	document.getElementById("fd_1").className = "fd2" ;
}
function showSub1() {
	document.getElementById("cu_sub1").style.display = "block" ;
	document.getElementById("fd_sub1").style.display = "none" ;
}
function showSub2() {
	document.getElementById("cu_sub1").style.display = "none" ;
	document.getElementById("fd_sub1").style.display = "block" ;
}