var menu=function(){
	var tm=15,z=50,s=2,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)
        {
			//alert(a);
            //var a1 = 'x';
            p.className = 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';} //currently Open
			else{c.style.zIndex=z; z++; c.t=setInterval(function(){sl(c,1)},tm);} //currently Closed
		}
        else
        {
            p.className = p.className.replace(a, '');
            c.t = setInterval(function(){sl(c,-1)},tm);
        }
	}

	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 true;
		}
		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}
}();