var  xPos  =  20;
var  yPos  =  document.body.clientHeight;
var  step  =  1;
var  delay  =  30;
var  height  =  0;
var  Hoffset  =  0;
var  Woffset  =  0;
var  yon  =  0;
var  xon  =  0;
var  pause  =  true;
var  interval;
floatAdBox.style.top  =  yPos;
function  floatAdChangePos()
{
	width  =  document.body.clientWidth;
	height  =  document.body.clientHeight;
	Hoffset  =  floatAdBox.offsetHeight;
	Woffset  =  floatAdBox.offsetWidth;
	floatAdBox.style.left  =  xPos  +  document.body.scrollLeft;
	floatAdBox.style.top  =  yPos  +  document.body.scrollTop;
	if  (yon)
	{
		yPos  =  yPos  +  step;
	}
	else
	{
		yPos  =  yPos  -  step;
	}
	if  (yPos  <  0)
	{
		yon  =  1;
		yPos  =  0;
	}
	if  (yPos  >=  (height  -  Hoffset))
	{
		yon  =  0;
		yPos  =  (height  -  Hoffset);
	}
	if  (xon)
	{
		xPos  =  xPos  +  step;
	}
	else
	{
		xPos  =  xPos  -  step;
	}
	if  (xPos  <  0)
	{
		xon  =  1;
		xPos  =  0;
	}
	if  (xPos  >=  (width  -  Woffset))
	{
		xon  =  0;
		xPos  =  (width  -  Woffset);
	}
}
function  floatAdStart()
{ 
	floatAdBox.visibility  =  "visible";
	interval  =  setInterval('floatAdChangePos()',  delay);
}
floatAdStart();