var menu=function(){
	var t=50,z=1,ss=1,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)/ss) : Math.ceil(h/ss), 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};
}();