best viewed from 5 feet away, try it.
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<!doctype html public "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>Eye Opener</title>
<style>
body{background-color:black;color:white;font-family:verdana;font-size:9pt;}
.s{border:1 solid #ccc;border-collapse:collapse;margin:-1 0 0 0}
.s td{width:32px;height:32px;border:0}
.bl{background-color:white}
.wt{background-color:black}
.show{background-color:#333}
</style>
<script language="JavaScript">
<!--
var MAX=15, MIN=-15, STEP = 1;
var show = true;
var arr = null;
var timer=null;
function makeTable(){
var d = 10, k=0;
for(var i=0;i<8;i++){
var t = document.createElement("TABLE");
t.cellSpacing = t.cellPadding = 0;
t.className = "s";
var r = t.insertRow();
for(var j=0; j<16; j++){
var c = r.insertCell();
c.innerText=" ";
c.className = (j%2==0) ? "bl" : "wt";
}
t.style.marginLeft = k;
dis.appendChild(t);
if((k+d)<MIN || (k+d)>MAX) d*=-1;
k = k+d;
}
}
function showMe(){
var td = dis.getElementsByTagName("TD");
for(var i=0;i<td.length;i++)
if((td[i].cellIndex % 2)==0)
td[i].className = show ? "show" :"bl" ;
show = !show;
}
function doMove(){
var t = dis.getElementsByTagName("TABLE");
if(arr==null){
arr = new Array();
for(var i=0;i<t.length; i++)
arr[i] = (i%2==0)? 1 : -1;
}
for(var i=0;i <8; i++){
var d = parseInt(t[i].style.marginLeft);
if((d + arr[i]*STEP)>MAX || (d + arr[i]*STEP)<MIN) arr[i] *=-1;
t[i].style.marginLeft = "" + (d + arr[i]*STEP) +"px";
}
}
function moveHandler(){
timer = setInterval('doMove()',400);
btnMove.disabled = true;
btnStop.disabled = false;
}
function stopHandler(){
clearInterval(timer);
btnMove.disabled = false;
btnStop.disabled = true;
}
window.onload = makeTable;
//-->
</script>
</head>
<body>
<h1>Eye Opener</h1>
<p>Do you believe your eyes? <button onclick="showMe()" title="show me the truth">Show Me</button>
<button onclick="moveHandler()" id=btnMove title="move it">Move</button>
<button onclick="stopHandler()" id=btnStop disabled title="stop move">Stop</button></p><div id=dis style="margin-left:50px" title="are these lines horizontal?">
</div>
<hr>
<ADDRESS>created by <a href="mailto:[email protected]">onestab</a></ADDRESS>
</body>
</html>