function turn_red() 
{ 
bgchange.style.backgroundColor="000000";
bgchange.style.color="ff8080";
greenTimer=setTimeout("turn_green()", 500);
}

function turn_green() 
{ 
//bgchange.style.backgroundColor="ffff80";
bgchange.style.color="80ff80";

blueTimer=setTimeout("turn_blue()", 500);
}

function turn_blue() 
{ 
//bgchange.style.backgroundColor="8080ff";
bgchange.style.color="8080ff";
redTimer=setTimeout("turn_red()", 500);
}

turn_red();