var menu=function(){
     var t=15,z=50,s=6,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}
}();