function tab01_show(){
	document.getElementById("tab01_content").style.display="block";
	document.getElementById("tab02_content").style.display="none";
	document.getElementById("tab03_content").style.display="none";
	document.getElementById("tab04_content").style.display="none";
}

function tab02_show(){
	document.getElementById("tab01_content").style.display="none";
	document.getElementById("tab02_content").style.display="block";
	document.getElementById("tab03_content").style.display="none";
	document.getElementById("tab04_content").style.display="none";
}

function tab03_show(){
	document.getElementById("tab01_content").style.display="none";
	document.getElementById("tab02_content").style.display="none";
	document.getElementById("tab03_content").style.display="block";
	document.getElementById("tab04_content").style.display="none";
}

function tab04_show(){
	document.getElementById("tab01_content").style.display="none";
	document.getElementById("tab02_content").style.display="none";
	document.getElementById("tab03_content").style.display="none";
	document.getElementById("tab04_content").style.display="block";
}