function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v3.0
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}

function get0or1()
{
	return (Math.round(Math.random()*10000) % 2);
}

var firstTime=true;
function swapbg(side,index)
{
	if (firstTime)
	{
		MM_preloadImages('images/left-00.gif','images/left-01.gif','images/left-10.gif','images/left-11.gif',
						 'images/left-20.gif','images/left-21.gif','images/left-30.gif','images/left-31.gif',
						 'images/right-00.gif','images/right-01.gif','images/right-10.gif','images/right-11.gif',
						 'images/right-20.gif','images/right-21.gif','images/right-30.gif','images/right-31.gif');
		firstTime=false;
	}

	var x=MM_findObj('img'+side+index);
	index = index % 4;
	if (x != null) x.src = 'images/'+side+'-'+index+get0or1()+'.gif';

	return (x != null);
}

function swapImages()
{
	var i = 0; 
	while (swapbg('left',i) && swapbg('right',i))
		i++;

	setTimeout('swapImages();',2000);
}