function disp_toggle(div_id){
	document.getElementById(div_id).style.display = document.getElementById(div_id).style.display == 'block' ? 'none' : 'block';
}

function show_ranking(){
	document.write('<iframe src="../../rakuten/rankin/all.html" width="100%" height="290" marginwidth="0" marginheight="0" border="0" frameborder="0" scrolling="no" style="border:none;"></iframe>');
}