function menu(id, listtable) {
	var list = document.getElementById(id);
	if(list.style.display=='none')
		list.style.display='';
	else
		list.style.display='none';
}

function menuover(left,right,center,id) {
	var left = document.getElementById(left+id);
	var right = document.getElementById(right+id);
	var center = document.getElementById(center+id);
	
	left.className='menu_left_over left';
	right.className='menu_right_over right';
	center.className='menu_middle_over menu_margin_right';
}

function menuout(left,right,center,id) {
	var left = document.getElementById(left+id);
	var right = document.getElementById(right+id);
	var center = document.getElementById(center+id);
	
	left.className='menu_left left';
	right.className='menu_right right';
	center.className='menu_middle menu_margin_right';
}