//ランチ、ディナー
function btLunchRollover() {
	document.getElementById("bt_lunch").onmouseover = function() {
		document.getElementById("bt_lunch").setAttribute("src", "./images/bt_lunch_over.png");
	}
	document.getElementById("bt_lunch").onmouseout = function() {
		document.getElementById("bt_lunch").setAttribute("src", "./images/bt_lunch.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btLunchRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btLunchRollover);
}

function btDinnerRollover() {
	document.getElementById("bt_dinner").onmouseover = function() {
		document.getElementById("bt_dinner").setAttribute("src", "./images/bt_dinner_over.png");
	}
	document.getElementById("bt_dinner").onmouseout = function() {
		document.getElementById("bt_dinner").setAttribute("src", "./images/bt_dinner.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btDinnerRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btDinnerRollover);
}

function btCourseRollover() {
	document.getElementById("bt_course").onmouseover = function() {
		document.getElementById("bt_course").setAttribute("src", "./images/bt_course_over.png");
	}
	document.getElementById("bt_course").onmouseout = function() {
		document.getElementById("bt_course").setAttribute("src", "./images/bt_course.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btCourseRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btCourseRollover);
}

function btPartyRollover() {
	document.getElementById("bt_party").onmouseover = function() {
		document.getElementById("bt_party").setAttribute("src", "./images/bt_party_over.png");
	}
	document.getElementById("bt_party").onmouseout = function() {
		document.getElementById("bt_party").setAttribute("src", "./images/bt_party.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btPartyRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btPartyRollover);
}

//問合せ
function btContactRollover() {
	document.getElementById("bt_contact").onmouseover = function() {
		document.getElementById("bt_contact").setAttribute("src", "./images/bt_cuisine_contactover.png");
	}
	document.getElementById("bt_contact").onmouseout = function() {
		document.getElementById("bt_contact").setAttribute("src", "./images/bt_cuisine_contact.png");
	}
}
if(window.addEventListener) {
	window.addEventListener("load", btContactRollover, false);
}
else if(window.attachEvent) {
	window.attachEvent("onload", btContactRollover);
}