function menu_show(td) { td.getElementsByTagName('ul')[0].style.display='block'; }
function menu_hide(td) { td.getElementsByTagName('ul')[0].style.display='none'; }
function init() {
	if (document.all) {
		document.getElementById('menu_b').onmouseover = function () { menu_show(this); }
		document.getElementById('menu_b').onmouseout  = function () { menu_hide(this); }
		
		document.getElementById('menu_t').onmouseover = function () { menu_show(this); }
		document.getElementById('menu_t').onmouseout  = function () { menu_hide(this); }
		
		document.getElementById('menu_p').onmouseover = function () { menu_show(this); }
		document.getElementById('menu_p').onmouseout  = function () { menu_hide(this); }
		
		document.getElementById('menu_n').onmouseover = function () { menu_show(this); }
		document.getElementById('menu_n').onmouseout  = function () { menu_hide(this); }
	}
}
var i = new Image();
i.src = '/images/header2.png';
var i = new Image();
i.src = '/images/header.png';
window.onload = init;
i = undefined;