//隐藏，显示
function qh(n)
{
	var box = document.getElementById('zhanhuinr').getElementsByTagName('ul');
	var ac = box.length;
	for(var i=0; i<ac; i++)
	{
		box[i].style.display='none';	
	}	
	box[n].style.display='block';
}

function hd(n)
{
	var flash_box = document.getElementById('head_flash').getElementsByTagName('div');
	var head_right= document.getElementById('head_flash');
	var head_flash_l=document.getElementById('head_flash_l');
	var ac = flash_box.length;
	for(var i=0; i<ac; i++)
	{
		flash_box[i].style.display='none';	
	}	
	flash_box[n].style.display='block';
	head_right.style.background='../images/flash'+(n+1)+'.jpg';
	head_flash_l.innerHTML='0'+(n+1);
}