/* top menu */
var topimg = new Array();

for( i = 0 ; i < 12 ; i++ ){
	topimg[i] = new Image();
}
topimg[0].src = directory + "images/idx_b_message.jpg";
topimg[1].src = directory + "images/idx_b_message_on.jpg";
topimg[2].src = directory + "images/idx_b_philosophy.jpg";
topimg[3].src = directory + "images/idx_b_philosophy_on.jpg";
topimg[4].src = directory + "images/idx_b_profile.jpg";
topimg[5].src = directory + "images/idx_b_profile_on.jpg";
topimg[6].src = directory + "images/idx_b_history.jpg";
topimg[7].src = directory + "images/idx_b_history_on.jpg";
topimg[8].src = directory + "images/idx_b_data.jpg";
topimg[9].src = directory + "images/idx_b_data_on.jpg";
topimg[10].src = directory + "images/idx_b_multi.jpg";
topimg[11].src = directory + "images/idx_b_multi_on.jpg";

function topmenu(dim,cnt){
	document.images[dim].src = topimg[cnt].src;
}