window.onresize = function(){
	fixBackground();
}
function fixBackground() {
	if(0 == img_width || 0 == img_height) {
		return;	
	}
	var window_width = getClientWidth();
	var window_height = getClientHeight();
	var new_width = img_width*window_height/img_height;
	var new_height = img_height*window_width/img_width;
	if(new_width > window_width) {
		document.getElementById('background_img').style.width=new_width+"px";
		document.getElementById('background_img').style.height=window_height+"px";
		document.getElementById('background_img').style.left=(0-(new_width-window_width)/2)+"px";
		document.getElementById('background_img').style.top=0+"px";
	}
	else {
		document.getElementById('background_img').style.width=window_width+"px";
		document.getElementById('background_img').style.height=new_height+"px";
		document.getElementById('background_img').style.left=0+"px";
		document.getElementById('background_img').style.top=(0-(new_height-window_height)/2)+"px";
	}
	document.getElementById('background_img').style.display='block';
};

function getClientWidth()
{
  var x = window.innerWidth ||
          document.documentElement.clientWidth ||
          document.body.clientWidth;

  return x ? x : 0;
};

function getClientHeight()
{
  var x = window.innerHeight ||
          document.documentElement.clientHeight ||
          document.body.clientHeight;


  return x ? x : 0;
};
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*10)+')';
		c.style.height=h+(d*f)+'px'
	}
	return{dd:dd}
}();