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
    }
}();