var menu=function(){
	var t=15,z=50,s=3,a;
	function dd(n){this.n=n; this.h=[]; this.c=[]}
	dd.prototype.init=function(p,c){
		a=c; var w=document.getElementById(p), s=w.getElementsByTagName('ul'), l=s.length, i=0;
		for(i;i<l;i++){
			var h=s[i].parentNode; this.h[i]=h; this.c[i]=s[i];
			h.onmouseover=new Function(this.n+'.st('+i+',true)');
			h.onmouseout=new Function(this.n+'.st('+i+')');
		}
	}
	dd.prototype.st=function(x,f){
		var c=this.c[x], h=this.h[x], p=h.getElementsByTagName('a')[0];
		clearInterval(c.t); c.style.overflow='hidden';
		if(f){
			p.className+=' '+a;
			if(!c.mh){c.style.display='block'; c.style.height=''; c.mh=c.offsetHeight; c.style.height=0}
			if(c.mh==c.offsetHeight){c.style.overflow='visible'}
			else{c.style.zIndex=z; z++; c.t=setInterval(function(){sl(c,1)},t)}
		}else{p.className=p.className.replace(a,''); c.t=setInterval(function(){sl(c,-1)},t)}
	}
	function sl(c,f){
		var h=c.offsetHeight;
		if((h<=0&&f!=1)||(h>=c.mh&&f==1)){
			if(f==1){c.style.filter=''; c.style.opacity=1; c.style.overflow='visible'}
			clearInterval(c.t); return
		}
		var d=(f==1)?Math.ceil((c.mh-h)/s):Math.ceil(h/s), o=h/c.mh;
		c.style.opacity=o; c.style.filter='alpha(opacity='+(o*100)+')';
		c.style.height=h+(d*f)+'px'
	}
	return{dd:dd}
}();


<!--
function clearstr(seb){
if(seb.value=='請輸入查找關鍵字'){
seb.value='';
}
setfoc(seb);
}

function addstr(seb){
if(seb.value==''){
seb.value='請輸入查找關鍵字';
}
}

function checkblank(){
if(document.all.key.value==""||document.all.key.value=="請輸入查找關鍵字"){
alert('搜索關鍵字不能為空！');
return false;
}
if(document.all.key.value=="%" || document.all.key.value=="?" || document.all.key.value==" "){
document.all.key.value="";
return false;//[ \f\r\t\n]
}
return true;
}
function changeselg(ia,pt0,pt1,pt2){
allclose(pt0,pt1,pt2);
if(ia<=0)
pt0.style.display="";
if(ia==1)
pt1.style.display="";
if(ia==2)
pt2.style.display="";
}
function allclose(pd0,pd1,pd2){
pd0.style.display="none";
pd1.style.display="none";
pd2.style.display="none";
}
-->