Fijate si algo así te sirve:
Código PHP:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>test</title>
<script>
var t=false;
function contar(){
if(t)clearTimeout(t);
s=arguments[0] || 0;
if(s>10)location.reload();
s++;
t=setTimeout("contar("+s+")",1000);
}
window.onload=document.onmousemove=contar;
</script>
</head>
<body>
</body>
</html>