var css = new Array();
if (document.styleSheets[0].cssRules) {
	css = document.styleSheets[0].cssRules;
}
else if (document.styleSheets[0].rules) {
	css = document.styleSheets[0].rules;
}

function menu() {
	for (var i = 0; i < arguments.length; i++) {
		while (arguments[i].indexOf(' ') >= 0) {
			arguments[i] = arguments[i].replace(' ', '');
		}
	}
	
	for (var i = 0; i < css.length; i++) {
		if (css[i].selectorText.match(/^div#menu ul\./i)) {
			var show = true;
			var splitted = css[i].selectorText.replace(/^div#menu ul\./i, '').split('_');
			for (var j = 0; j < splitted.length; j++) {
				if (splitted[j] != arguments[j]) {
					show = false;
				}
			}
			if (show) {
				css[i].style.display = 'block';
			}
			else if (css[i].selectorText.match(/^div#menu ul\./i)) {
				css[i].style.display = 'none';
			}
		}
	}
}