var cache = [];



preLoadImages = function() {
	var args_len = arguments.length;
	for (var i = args_len; i--;) {
		var cacheImage = document.createElement('img');
		cacheImage.src = arguments[i];
		cache.push(cacheImage);
	}
}

/*
* Menuscript (C) Michael Leigeber 2010
* http://www.leigeber.com/ 
* Released under the Creative Commons Licence
* http://creativecommons.org/licenses/by/3.0/us/
* Amended by Howard Daley 2010
*/

var menu=function(){

	var t=15,z=50,s=5;
	var pos=new Array();
	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+')');
			pos[i] = 0;
		}
	}
	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;} //c.mw=107;; c.style.width=0;
			if(c.mh==c.offsetHeight){c.style.overflow='visible'}
			else{c.style.zIndex=z; z++; c.t=setInterval(function(){sl(c,s,x)},t);}
		}else{p.className=p.className.replace(a,''); c.t=setInterval(function(){sl(c,-s,x)},t);}
	}
	function sl(c,f,i){
		var h=c.offsetHeight;
		if((h<=0&&f!=s)||(h>=c.mh&&f==s)){
			if(f==s){c.style.overflow='visible'} //c.style.filter=''; c.style.opacity=1; 
			clearInterval(c.t); return
		}
		//var d=(f==1)?Math.ceil((c.mh-h)/s):Math.ceil(h/s), o=h/c.mh;
		pos[i]+=(f==s)?f*(1-Math.floor(pos[i]/90)):f*Math.ceil(pos[i]/90);
		//c.style.opacity=o; c.style.filter='alpha(opacity='+(o*100)+')';
		//c.style.height=h+(d*f)+'px'
		var p=(f==s)?Math.sin(pos[i]* Math.PI/180)*c.mh:c.mh-(Math.cos(pos[i] * Math.PI/180)*c.mh);
		c.style.height=p+'px';
		//var w=p/c.mh * c.mw;
		//c.style.width=w+'px';
	}
	return{dd:dd}
}();