function clearindextab()
{
	document.getElementById("dt01").style.backgroundImage = "url('./img/index_mt_bg_09.png')";
	document.getElementById("dt02").style.backgroundImage = "url('./img/index_mt_bg_06.png')";

	document.getElementById("dd01").style.display = "none";
	document.getElementById("dd02").style.display = "none";
}

function tabmenu01()
{
	clearindextab();
	document.getElementById("dt01").style.backgroundImage = "url(./img/index_mt_bg_05.png)";
	document.getElementById("dd01").style.display = "block";
}

function tabmenu02()
{
	clearindextab();
	document.getElementById("dt02").style.backgroundImage = "url(./img/index_mt_bg_10.png)";
	document.getElementById("dd02").style.display = "block";
}