var brOK=false;
var mie=false;
var aver=parseInt(navigator.appVersion.substring(0,1));
var aname=navigator.appName;

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=2;
var timer1;

function Mouse(Mousename,width,height)
{this.named=Mousename;
 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 moveMouse(Mousename)
{
 if(brOK)
  {eval("Mouse="+Mousename);
   if(!mie)
    {pageX=window.pageXOffset;
     pageW=window.innerWidth-20;
     pageY=window.pageYOffset;
     pageH=window.innerHeight-20;
    }
   else
    {pageX=window.document.body.scrollLeft;
     pageW=window.document.body.offsetWidth-20;
     pageY=window.document.body.scrollTop;
     pageH=window.document.body.offsetHeight-20;
    } 

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


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

   if(document.layers)
      {eval('document.'+Mouse.named+'.top ='+Mouse.yy);
       eval('document.'+Mouse.named+'.left='+Mouse.xx);
      } 
   else if (document.all)
      {eval('document.all.'+Mouse.named+'.style.pixelLeft='+Mouse.xx);
       eval('document.all.'+Mouse.named+'.style.pixelTop ='+Mouse.yy); 
      }
   else if (document.getElementById)
      {document.getElementById(Mouse.named).style.left=Mouse.xx;
       document.getElementById(Mouse.named).style.top =Mouse.yy; 
      }
   Mouse.timer1=setTimeout("moveMouse('"+Mouse.named+"')",100);
  }
}


function stopmouse(Mousename)
{if(brOK)
  {
   eval("Mouse="+Mousename);
   if(Mouse.timer1!=null)
    {clearTimeout(Mouse.timer1)}
  }
}