var brOK=false;
var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;
var iphoto = 1;
var max = 1;
var dir = "js";
var name = "wuyitemai_piaofu";
var surf = "gif";
var settime = 140;

function checkbrOK()
{if(aname.indexOf("Internet Explorer")!=-1)
   {if(aver>=4) brOK=navigator.javaEnabled();
    mie=true;
   }
 if(aname.indexOf("Netscape")!=-1)  
   {if(aver>=4) brOK=navigator.javaEnabled();}
}

var vmin=2;
var vmax=5;
var vr=0.02;
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=684;
 this.yy=30;
 this.timer1=null;
}

function movechip(chipname)
{
 if(brOK)
  {eval("chip="+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-22;
     pageY=window.document.body.scrollTop;
     pageH=window.document.body.offsetHeight-34;
    } 

   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(!mie)
      {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); 
      }
   //roll();
   chip.timer1=setTimeout("movechip('"+chip.named+"')",settime);
  }
}

function roll()
{ 
  if (!mie) {
    document.movephoto.src = dir + "/" + name + iphoto + "." + surf;
  } else {
    document.all.movephoto.src = dir + "/" + name + iphoto + "." + surf;
  }
  iphoto ++;
  if (iphoto > max) {iphoto = 1;}
  return;	
}


function hide(chipname){
	if(brOK){
		eval("chip="+chipname);
		if(!mie)
			eval('document.'+chip.named+'.visibility ='+"'hide'");
		else
			eval('document.all.'+chip.named+'.style.visibility ='+"'hidden'");
	}
}

function stopme(chipname)
{if(brOK)
  {//alert(chipname)
   eval("chip="+chipname);
   if(chip.timer1!=null)
    {clearTimeout(chip.timer1)}
  }
}
var chip1;
function pagestart(i,tdir,tname,tsurf,ttime)
{max = i;
 dir = tdir;
 name = tname;
 surf = tsurf;
 settime = ttime;
 checkbrOK(); 
 chip1=new Chip("chip1",117,75);
  if(brOK) 
   { movechip("chip1");
    }
}
function rollover(pic)
{ //alert(document.all.movephoto.id);
  if (brOK) {
    if (!mie) {
     document.movephoto.src =pic;
    } else {
      document.all.movephoto.src =pic;
    }
  }		
}
function rollback(pic)
{
  if (brOK) {
    if (!mie) {
      document.movephoto.src =pic;
    } else {
      document.all.movephoto.src =pic;
    }
  }		
}

//if(brOK) {stopme('chip1');}