hex=new Array("0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f","z");
function preload(){
	for (i=0;i<hex.length;i++){
		eval("gif" + hex[i] + "=new Image; gif" + hex[i] + ".src='" + hex[i] + ".gif'");
	}
}

var a="go";
var c=0;
var e=0;
var d1;
function squares(){
	if (a=="go"){
		b1=Math.round(Math.random()*255);
		b2=Math.round(Math.random()*15);
		eval("document.images[b1].src=gif" + hex[b2] + ".src");
		setTimeout("squares()",40);
		c++;
		if (c>127) clear1();
	}
}
function clear1(){
	a="stop";
	d1=new Array(15,16,17);
	d2=d1[Math.round(Math.random()*2)];
//	setTimeout("clear2()",100);
}
function clear2(){
	if (e<17){
		for (f=e; f<256; f=f+d2){
			eval("document.images[f].src='f.gif'");
		}
		e++;
		setTimeout("clear2()",40);
	}
	else{
		a="go";
		c=0;
		e=0;
		setTimeout("squares()",100);
	}
}
m=31;
n=0;
o=1;
counter = 0;
function lines(){
	if (m<=-16){
		m=31;
		o=-o;
		counter++;
		if (counter > 1) {
			return;
		}
	}
	if (m<0) {
		m=m+31;
		n=n+o;
	}
	if (m>=0){
		eval("document.images[m].src='" + hex[n] + ".gif'");
		m=m-16;
		setTimeout ("lines()",40);
	}
}