function show(){
TopPos=parseInt(document.getElementById("moveit").style.top, 10)
LowPos=160
if (window.hideme){ window.clearInterval(hideme)}
showme=window.setInterval("Appear()",10) 
}

function Appear(){
tmp = parseInt(document.getElementById("moveit").style.top, 10)
if ( tmp < LowPos) 
{
tmp += 3
document.getElementById("moveit").style.top = tmp + "px"
//document.all.moveit.style.pixelLeft+=1 
}
else if (window.showme)
{
clearInterval(showme)
}
}

function hide(){ 
clearInterval(showme)
hideme=window.setInterval("hideit()",10)
}

function hideit(){
tmp = parseInt(document.getElementById("moveit").style.top, 10)
if (tmp > TopPos) {
tmp -= 3
document.getElementById("moveit").style.top = tmp + "px" 
}
else if (window.hideme){
window.clearInterval(hideme)
ReAppear()
}
}

function ReAppear(){
tmp = parseInt(document.getElementById("moveit").style.top, 10)
}

window.setTimeout("show()",1500);