var mvtLight="zp.jpg"
var mvtWidth=200
var mvtHeight=86
var mvtLink="http://www.guangsha.net/display.asp?id=479"
brOK=navigator.javaEnabled()?true:false
ns4=(document.layers)?true:false
ie4=(document.all)?true:false
if(mvtLight!=""){if(ns4){document.write('<layer id="mvt" width=120 height=60;"><a href="'+mvtLink+'" target=_blank><img src="'+mvtLight+'" onmouseover=stopme("mvt") onmouseout=movechip("mvt") border=0 width="'+mvtWidth+'" height="'+mvtHeight+'"></a></layer>');}else{document.write('<div id="mvt" style="position:absolute; width:40; height:60; z-index:9; filter: Alpha(Opacity=100)"><a href="'+mvtLink+'" target=_blank><img src="'+mvtLight+'" onmouseover=stopme("mvt") onmouseout=movechip("mvt") border=0 width="'+mvtWidth+'" height="'+mvtHeight+'"></a></div>');}}
var vmin=2; var vmax=5; var vr=2; var timer1;
function Chip(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 movechip(chipname)
{
 if(brOK)
  {eval("chip="+chipname);
   if(ns4)
    {pageX=window.pageXOffset;
//     pageW=window.innerWidth;
     pageY=window.pageYOffset;
//     pageH=window.innerHeight;
pageW=500;
pageH=20;
    }
   else
    {pageX=window.document.body.scrollLeft;
//     pageW=window.document.body.offsetWidth-8;
 pageW=900;
pageH=600;
     pageY=window.document.body.scrollTop;
  //   pageH=window.document.body.offsetHeight;
    } 

   chip.xx=chip.xx+chip.vx;
   chip.yy=chip.yy+chip.vy;
   
   chip.vx+=vr*(Math.random()-0.5);
   chip.vy+=vr*(Math.random()-0.5);
   if(chip.vx>(vmax+vmin))  chip.vx=(vmax+vmin)*2-chip.vx;
   if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;
   if(chip.vy>(vmax+vmin))  chip.vy=(vmax+vmin)*2-chip.vy;
   if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;


   if(chip.xx<=pageX)
     {chip.xx=pageX;
      chip.vx=vmin+vmax*Math.random();
     }
   if(chip.xx>=pageX+pageW-chip.w)
     {chip.xx=pageX+pageW-chip.w;
      chip.vx=-vmin-vmax*Math.random();
     }
   if(chip.yy<=pageY)
     {chip.yy=pageY;
      chip.vy=vmin+vmax*Math.random();
     }
   if(chip.yy>=pageY+pageH-chip.h)
     {chip.yy=pageY+pageH-chip.h;
      chip.vy=-vmin-vmax*Math.random();
     }

   if(ns4)
      {eval('document.'+chip.named+'.top ='+chip.yy);
       eval('document.'+chip.named+'.left='+chip.xx);
      } 
   else
      {eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
       eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy); 
      }
   chip.timer1=setTimeout("movechip('"+chip.named+"')",180);
  }
}

function stopme(chipname){ if(brOK){ eval("chip="+chipname); if(chip.timer1!=null){clearTimeout(chip.timer1)}}}
var mvt;
function mvt() { mvt=new Chip("mvt",60,80); if(brOK){ movechip("mvt");}}
mvt();