function crash(type) {
	if (document.getElementById('ul' + type).style.display == 'none') {
		document.getElementById('ul' + type).style.display='block';
		document.getElementById('span' + type).style.background="url('/images/side_middle.png') repeat-y #F00";
	}
	else {
		document.getElementById('ul' + type).style.display='none';
		document.getElementById('span' + type).style.background='none';
	}
}