var set_y = 0;
<!--

// Detect if the browser is IE or not.
// If it is not IE, we assume that the browser is NS.
var IE = document.all?true:false

// If NS -- that is, !IE -- then set up for mouse capture
if (!IE) document.captureEvents(Event.MOUSEMOVE)

// Set-up to use getMouseXY function onMouseMove
document.onmousemove = getMouseXY;

// Temporary variables to hold mouse x-y pos.s
var tempX = 0
var tempY = 0

// Main function to retrieve mouse x-y pos.s

function getMouseXY(e) {
  if (IE) { // grab the x-y pos.s if browser is IE
    tempX = event.clientX + document.body.scrollLeft
    tempY = event.clientY + document.body.scrollTop
  } else {  // grab the x-y pos.s if browser is NS
    tempX = e.pageX
    tempY = e.pageY
  }  
  // catch possible negative values in NS4
  if (tempX < 0){tempX = 0}
  if (tempY < 0){tempY = 0}  
  // show the position values in the form named Show
  // in the text fields named MouseX and MouseY
	var myWidth = document.documentElement.clientWidth;
    var myHeight = document.documentElement.clientHeight;
  if ( tempX >= (myWidth-15) )
  	set_y = 0;
  
  if ( tempY < set_y && tempY < 15 ) {
  	document.getElementById("divtag").style.visibility = "visible";
	document.getElementById("jollyno").style.visibility = "visible";
  }
  if ( tempX >= (myWidth-15) )
  	set_y = 0;
  else 
  	set_y = tempY;
}

function hideMovie() {
	document.getElementById("divtag").style.visibility = "hidden";
	document.getElementById("jollyno").style.visibility = "hidden";
}

function thankyoupage_close() {
	document.getElementById("thankyoupage_close1").style.visibility = "hidden";
	document.getElementById("thankyoupage_close2").style.visibility = "hidden";
	document.getElementById("thankyoupage_divtag").style.visibility = "hidden";
}

function enable_thankyou() {
	document.getElementById("thankyoupage_close1").style.visibility = "visible";
	document.getElementById("thankyoupage_close2").style.visibility = "visible";
	document.getElementById("thankyoupage_divtag").style.visibility = "visible";
}