var pngbrOK=false;
var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;
var pngmystop=0;
function pngcheckbrOK()
{if(aname.indexOf("Internet Explorer")!=-1)
{if(aver>=4) pngbrOK=navigator.javaEnabled();
mie=true;
}
if(aname.indexOf("Netscape")!=-1)  
{if(aver>=4) pngbrOK=navigator.javaEnabled();}
}
var vmin=2;
var vmax=5;
var vr=2;
var timer1;
function pngchip(chipname,width,height)
{
this.named=chipname;
this.vx=vmin+vmax*Math.random();
this.vy=vmin+vmax*Math.random();
this.w=width;
this.h=height;
this.xx=0;
this.yy=0;
this.timer1=null;
}
function pngmovechip(chipname)
{
if(pngbrOK && pngmystop==0)
{eval("pngchip="+chipname);
if(!mie)
{pageX=window.pageXOffset;
pageW=window.innerWidth;
pageY=window.pageYOffset;
pageH=window.innerHeight;
}
else
{pageX=window.document.body.scrollLeft;
pageW=window.document.body.offsetWidth-8;
pageY=window.document.body.scrollTop;
pageH=window.document.body.offsetHeight;
} 
pngchip.xx=pngchip.xx+pngchip.vx;
pngchip.yy=pngchip.yy+pngchip.vy;
pngchip.vx+=vr*(Math.random()-0.5);
pngchip.vy+=vr*(Math.random()-0.5);
if(pngchip.vx>(vmax+vmin))  pngchip.vx=(vmax+vmin)*2-pngchip.vx;
if(pngchip.vx<(-vmax-vmin)) pngchip.vx=(-vmax-vmin)*2-pngchip.vx;
if(pngchip.vy>(vmax+vmin))  pngchip.vy=(vmax+vmin)*2-pngchip.vy;
if(pngchip.vy<(-vmax-vmin)) pngchip.vy=(-vmax-vmin)*2-pngchip.vy;
if(pngchip.xx<=pageX)
{pngchip.xx=pageX;
pngchip.vx=vmin+vmax*Math.random();
}
if(pngchip.xx>=pageX+pageW-pngchip.w)
{pngchip.xx=pageX+pageW-pngchip.w;
pngchip.vx=-vmin-vmax*Math.random();
}
if(pngchip.yy<=pageY)
{pngchip.yy=pageY;
pngchip.vy=vmin+vmax*Math.random();
}
if(pngchip.yy>=pageY+pageH-pngchip.h)
{pngchip.yy=pageY+pageH-pngchip.h;
pngchip.vy=-vmin-vmax*Math.random();
}
if(!mie)
{eval('document.'+pngchip.named+'.top ='+pngchip.yy);
eval('document.'+pngchip.named+'.left='+pngchip.xx);
} 
else
{eval('document.all.'+pngchip.named+'.style.pixelLeft='+pngchip.xx);
eval('document.all.'+pngchip.named+'.style.pixelTop ='+pngchip.yy); 
}
	pngchip.timer1=setTimeout("pngmovechip('"+pngchip.named+"')",100);
}
}
function pngstop(x)
{
pngbrOK=true;
pngmystop=x;
pngmovechip("pngtome");
}
var pngtome;
var pngchip;
function pngtome()
{pngcheckbrOK(); 
pngtome=new pngchip("pngtome",80,80);
if(pngbrOK) 
{ pngmovechip("pngtome");
}
}
ns4=(document.layers)?true:false;
ie4=(document.all)?true:false;
function pngover()
{
if(ns4){
	document.png.visibility="show";
	}else if(ie4) 
	{
	pngstop(1);
	}
}
function pngout()
{
if(ns4){
	}else if(ie4) 
	{
	pngstop(0);
	}
}

	document.write("<div id='pngtome' style='position:absolute;' onMouseOver=pngover() onMouseOut=pngout()><a href='http://www.dcn.org.cn/ItemContent.asp?ConID=26382' target='_blank'><img src='http://www.dcn.org.cn/ad/zjkx.jpg' border=0></a>"
	
	+"</div>");
	

pngtome()