// Moving Objects Script

// By Virtual_Max

// 

// Permission to use, copy, modify, and distribute this software and its documentation 

// for NON-COMMERCIAL purposes and  without fee is hereby granted provided that this 

// notice appears in all copies. 

//

// VIRTUAL MAX MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE 

// SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED 

// WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR 

// NON-INFRINGEMENT. VIRTUAL MAX SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY 

// LICENSEE AS A RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR 

// ITS DERIVATIVES.





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 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(!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;

    } 



   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); 

      }

   chip.timer1=setTimeout("movechip('"+chip.named+"')",100);

  }

}





function stopme(chipname)

{if(brOK)

  {//alert(chipname)

   eval("chip="+chipname);

   if(chip.timer1!=null)

    {clearTimeout(chip.timer1)}

  }

}