<!--   
document.write("<div id='dd' style='position:absolute; left:103px; top:200px; width:13px; height:15px; z-index:1'>");   
document.write("<a href='http://www.qcfy.net/YounthArticle/' target='_blank'><img src='_Temp/Ad/xiaoshuo.gif' border='0'></a></div>");   


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 interval;
var flag=0;
dd.style.top = yPos;

function changePos()
{
	width = document.body.clientWidth;
	height = document.body.clientHeight;
	Hoffset = dd.offsetHeight;
	Woffset = dd.offsetWidth;
	dd.style.left = xPos + document.body.scrollLeft;
	dd.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 start()
{
	dd.visibility = "visible";
	interval = setInterval('changePos()', delay);
}
start();
//-->