function startClock() {
window.setInterval("lh()", 1000);
lh();
}
function lh() {
var l=0,h=105,s=110,t=120,t1=0,ph=0;
l = document.getElementById("bottom").offsetTop;
h = h + l;
eval ("document.getElementById('l4').style.height = h");
s = parseInt(s) + parseInt(l);
eval ("document.getElementById('l2').style.height = s");
eval ("document.getElementById('l3').style.height = s");
t = parseInt(t) + parseInt(l);
eval ("document.getElementById('l5').style.top = t");
eval ("document.getElementById('l5').style.visibility = 'visible'")
ph = document.getElementById('rOff').offsetHeight;
t1 = parseInt(l) - parseInt(ph) + 115;
eval ("document.getElementById('rOff').style.top = t1");

if (t1 > 600) {
eval ("document.getElementById('rOff').style.visibility = 'visible'")
 }
}