var menu = function() {
	var t = 15, z = 50, s = 5, a, th;
	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 && c.tm) clearTimeout(c.tm);
		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{ c.tm = setTimeout(function() { ht(c,t,p,a) }, 100) }
	}
	function ht(c,t,p,a) {
		p.className=p.className.replace(a,''); c.t=setInterval(function(){sl(c,-1)},t)
	}
	function sl(c,f){
		var h=c.offsetHeight;
		if((h<=1&&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}
}();