var menu=function(){
	var infos = '';
	var t=15,z=50,s=6,a;
	function dd(menu_elem){this.menu_elem=menu_elem; 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.menu_elem+'.st('+i+',true)');
			h.onmouseout=new Function(this.menu_elem+'.st('+i+')');
		}
	}
	dd.prototype.st=function(x,visible){
		var c=this.c[x], h=this.h[x], p=h.getElementsByTagName('a')[0];
		clearInterval(c.t);
		c.style.overflow='hidden';
		if(visible){
			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 height=c.offsetHeight;
		if((height<=0&&f!=1)||(height>=c.mh&&f==1)){
			if(f==1){c.style.filter=''; c.style.opacity=1; c.style.overflow='visible'}
			infos += 'if,';
			clearInterval(c.t); return
		}
		var d=(f==1)?Math.ceil((c.mh-height)/s):Math.ceil(height/s), o=(height/c.mh);
		
		c.style.opacity=o; c.style.filter='alpha(opacity='+(o*100)+')';
		c.style.height=height+(d*f)+'px'
		$('jsdebug').innerHTML = "opacity:" + o + " height:" + height + " object height:" + c.style.height + " f:" + f + " mh:" + c.mh + " d:" + d + " first eval:" + Math.ceil((c.mh-height)/s) + " second eval:" + Math.ceil(height/s) + " info:" + infos 
	}
	return{dd:dd}
}();