ns4 = (document.layers)? true:false
ie4 = (document.all)? true:false

// Animation parameters
startX = 0
startY = 0
deltaX = -1
deltaY = 0
movePeriod = 30

// Animation code
function movement() {
 if(window.innerWidth) {
  w = window.innerWidth
  h = window.innerHeight
 }else{
  w = document.body.clientWidth
  h = document.body.clientHeight
 }
 currentX += deltaX
 if(currentX <= -1375 || currentX >= 0) {
  deltaX = 0 - deltaX
  currentX += deltaX
  currentY += deltaY
 }
 if(currentY >= h) currentY = startY
}

function setPosition(x,y) {
 divStyle.left = currentX
 divStyle.top = currentY
}

function moveDiv() {
 movement()
 setPosition()
}

function moveImage() {
 if(navigator.appName == "Netscape") 
  divStyle = document.scrollDiv
 else // Internet Explorer
  divStyle = document.all.scrollDiv.style
 currentX = startX
 currentY = startY
 setPosition(currentX, currentY)
 divStyle.visibility = "visible"
 setInterval("moveDiv()",movePeriod)
}