var menu=function(){
  var t=15,z=500,s,a;
  function dd(n,speed){
    this.n=n;
    this.h=[];
    this.c=[]
    s = speed;
    }
  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';
        c.style.filter='';
        }
      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
  }
}();