function showsett(){
	document.getElementById("set").style.display="block";
	document.getElementById("s_img1").style.display="none";
	document.getElementById("s_img2").style.display="block";
}

function hidesett(){
	document.getElementById("set").style.display="none";
	document.getElementById("s_img1").style.display="block";
	document.getElementById("s_img2").style.display="none";
}