function c(){
if(boxc.style.display=="none")
boxc.style.display="block";
boxr.style.display="none";
rx.style.color="#bbbbbb"
kv.style.color="#ffffff"
}
function sd(){
if(boxc.style.display=="block")
boxc.style.display="none";
boxr.style.display="block";
kv.style.color="#bbbbbb"
rx.style.color="#ffffff"
}
function wang(){
	if(wangbox.style.display=="none")
	anbox.style.display="none";
	wangbox.style.display="block";
	wangluo.style.color="#ffffff";
	anquan.style.color="#2FA6DF";
	wanghang.background="images/menubg.jpg";
	anhang.background="images/btn_bg.gif";
}
function an(){
	if(wangbox.style.display=="block")
	anbox.style.display="block";
	wangbox.style.display="none";
	anquan.style.color="#ffffff";
	wangluo.style.color="#2FA6DF";
	anhang.background="images/menubg.jpg";
	wanghang.background="images/btn_bg.gif";
}

function checkkey()
{
  if (formsd.keywords.value=="")
  {
    alert("请输入您要查找的内容！");
	document.formsd.keywords.focus();
	return false;
  }
  return true;  
}