<!--

var startTime=new Date();
var endTime=new Date();
var startPressed=false;
var bgChangeStarted=false;
var maxWait=20;
var timerID;
var colors=new Array("tomato","chocolate","limegreen","crimson","darkslategray",
"aliceblue","mediumslateblue","cornflowerblue","darkorchid","darkkhaki","coral",
"darkolivegreen","cadetblue")
if (document.all||document.getElementById)
document.write('<div id="reflex" style="width:135;height:135;border:1px solid black" onClick="stopTest()"></div>')
function startTest()
{
if (document.all)
document.all.reflex.style.backgroundColor=colors[Math.floor(Math.random()*colors.length)];
else if (document.getElementById)
document.getElementById("reflex").style.backgroundColor=colors[Math.floor(Math.random()*colors.length)];
else if (document.layers)
document.reflexns.document.reflexns_sub.document.bgColor=colors[Math.floor(Math.random()*colors.length)];
bgChangeStarted=true;
startTime=new Date();
}
function remark(responseTime)
{
var responseString="";
if (responseTime < 0.10)
responseString="Excellent!";
if (responseTime >= 0.10 && responseTime < 0.20)
responseString="Very good!";
if (responseTime >=0.20 && responseTime < 0.30)
responseString="Pretty good! Aim for faster!";
if (responseTime >=0.30 && responseTime < 0.60)
responseString="Keep it up!";
if (responseTime >=0.60 && responseTime < 1)
responseString="Are you drunk?";
if (responseTime >=1)
responseString="Are you sleeping?";
return responseString;
}
function stopTest()
{
if(bgChangeStarted)
{
endTime=new Date();
var responseTime=(endTime.getTime()-startTime.getTime())/1000;
if (document.all)
document.all.reflex.style.backgroundColor="white";
else if (document.getElementById)
document.getElementById("reflex").style.backgroundColor="white";
else if (document.layers)
document.reflexns.document.reflexns_sub.document.bgColor="white"; alert("Your response time: " + responseTime + " seconds " + "\n" + remark(responseTime));
startPressed=false;
bgChangeStarted=false;
}
else
{
if (!startPressed)
{
alert("Press 'Start' to begin");
}
else
{ clearTimeout(timerID);
startPressed=false; alert("No cheating, color has not changed yet!");
} }
}
var randMULTIPLIER=0x015a4e35;
var randINCREMENT=1;
var today=new Date();
var randSeed=today.getSeconds();
function randNumber()
{
randSeed = (randMULTIPLIER * randSeed + randINCREMENT) % (1 << 31);
return((randSeed >> 15) & 0x7fff) / 32767;
}
function startit()
{
if(startPressed)
{
alert("You have already started. Press 'stop' first.");
return;
}
else
{
startPressed=true; timerID=setTimeout('startTest()', 6000*randNumber());
}
}

// --> 