var ButtonImage1 = new Array();
var ButtonImage2 = new Array();

for(i=1;i<8;i++){
	ButtonImage1[i] = new Image();
	ButtonImage1[i].src = "images/MENU_0" + i + "_on.gif";
	ButtonImage2[i] = new Image();
	ButtonImage2[i].src = "images/MENU_0" + i + ".gif";
}

function setOnMenu(flag){
	document.images["menu" + flag].src=ButtonImage1[flag].src;
}
function setOffMenu(flag){
	document.images["menu" + flag].src=ButtonImage2[flag].src;
}