var xPos = 300;
var yPos = 200; 
var step = 1;
var delay = 30; 
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var interval;
divFloat.style.top = yPos;
	function changePos() 
	{
	//	width = document.body.clientWidth;
	//	height = document.body.clientHeight;

		width = document.documentElement.clientWidth;
		height = document.documentElement.clientHeight;
		
		Hoffset = divFloat.offsetHeight;
		Woffset = divFloat.offsetWidth;
		divFloat.style.left = xPos + document.documentElement.scrollLeft;
		divFloat.style.top = yPos + document.documentElement.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 start()
	 {
//	 	divFloat.visibility = "visible";
		interval = setInterval('changePos()', delay);
	}
	function pause_resume(pause) 
	{
		if(pause) 
		{
			clearInterval(interval);
		}
		else 
		{
			interval = setInterval('changePos()',delay);
		}
	}
	function close_resume() 
	{
		clearInterval(interval);
		divFloat.style.display = "none";
	}
	start();