//��՗��A����
function btGanbanRollover() {
	document.getElementById("bt_ganban").onmouseover = function() {
		document.getElementById("bt_ganban").setAttribute("src", "./images/bt_ganban_over.png");
	}
	document.getElementById("bt_ganban").onmouseout = function() {
		document.getElementById("bt_ganban").setAttribute("src", "./images/bt_ganban.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btGanbanRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btGanbanRollover);
}

function btAshiyuRollover() {
	document.getElementById("bt_ashiyu").onmouseover = function() {
		document.getElementById("bt_ashiyu").setAttribute("src", "./images/bt_foot_over.png");
	}
	document.getElementById("bt_ashiyu").onmouseout = function() {
		document.getElementById("bt_ashiyu").setAttribute("src", "./images/bt_foot.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btAshiyuRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btAshiyuRollover);
}

//����
function btWaribikiRollover() {
	document.getElementById("bt_waribiki").onmouseover = function() {
		document.getElementById("bt_waribiki").setAttribute("src", "./images/bt_waribiki_over.png");
	}
	document.getElementById("bt_waribiki").onmouseout = function() {
		document.getElementById("bt_waribiki").setAttribute("src", "./images/bt_waribiki.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btWaribikiRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btWaribikiRollover);
}