// JavaScript Document

function toggle_nav_ul(color) {
	var title = document.getElementById(color + '_title');
	var ul_elem = document.getElementById('sidebar_' + color + '_nav');
	if(ul_elem.style.display != "none") {
		ul_elem.style.display    = "none";
		title.className = color + '_title_up';
	} else {
		ul_elem.style.display    = "block";
		title.className = color + '_title';
	}
}