function showmenu(id, button) { 
	var el = document.getElementById(id);

	if(el.style.display == 'none') {
		el.style.display = 'block';

		if(button.className == 'menu_title') 
			button.className = 'menu_title_open';
	} else {
		el.style.display = 'none';

		if(button.className == 'menu_title_open') 
			button.className = 'menu_title';
	}
	//adjustDivSize('tmenu0', 'tmenu0ul');
	//adjustDivSize('content', 'tmenu0ul');
}