/** 
 *  MovingObjects Script LIBRARY by Virtual_Max (http://come.to/vmax)
 *  This script can be used and modified absolutely free
 *  untill this statement presents unchanged in all copies
 *  and derivatives.
 *  adaptado por A.J.Arranhado-Portugal (pesca.com.sapo.pt)
 **/

allChips = new Array();

function makeChip(named,w,h,imagen,href,target,move)
 {this.named=named;
  this.w=0;
  this.h=40;
  this.xx=0;
  this.yy=0;
  this.zz=0;
  this.vx=0;
  this.vy=0;
  this.vz=0;
  this.zzmax=0;
  this.timer=null;
  this.im = new Image();
  this.im.src =imagen;
  this.imagen =imagen;
  this.complete=false;
  this.move=move;
  this.lastw=-1;
  this.move3D=false;
  var s;
  s='<style type="text/css">';
  s+='#'+named+'{position:absolute; width:'+w+'; height:'+h+'; top:'+this.yy+'; left:'+this.xx+'; visibility:hidden; }';
  s+='</style>';
  document.writeln(s);
  s='<div ID="'+named+'">';
  s+='<IMG SRC="'+this.imagen+'" border=0 SUPPRESS>';
  s+='</div>';
  document.writeln(s);
 }

function moveChip(chipn)
 {
  var chip=allChips[chipn];
  if(document.layers) 
    {d=document[chip.named];
     d.left=Math.floor(chip.xx);
     d.top=Math.floor(chip.yy);
    }
  if(document.all)                
    {d=document.all[chip.named].style;
     d.pixelLeft=chip.xx;
     d.pixelTop=chip.yy;
    }
 }

function visibilityChip(chipn,vis)
 {var chipname=allChips[chipn].named;
  if(document.all)
   {dddd=document.all[chipname].style;
    dddd.visibility = vis ? "visible":"hidden";
   }
  if(document.layers)
   {dddd=document[chipname];
    dddd.visibility = vis ? "show":"hide";
   }
 }

var pageX=0;
var pageY=0;
var pageW=140;
var pageH=600;

function getPageSizes()
{if(document.layers)
    {pageX=window.pageXOffset;
     pageW=window.innerWidth;
     pageY=window.pageYOffset;
     pageH=window.innerHeight;
    }
 if(document.all)
    {pageX=window.document.body.scrollLeft;
     pageW=window.document.body.offsetWidth;
     pageY=window.document.body.scrollTop;
     pageH=window.document.body.offsetHeight;
    } 
}

var vmin=1;
var vmax=2;
var vr=1;

function chipRandomMove(chipn)
{  
   chip = allChips[chipn];
 
   chip.vx+=vr*(Math.random()-0.5);
   chip.vy+=vr*(Math.random()-0.4);
   chip.vz+=vr*(Math.random()-0.4);
   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.vz>(vmax+vmin))  chip.vz=(vmax+vmin)*2-chip.vz;
   if(chip.vz<(-vmax-vmin)) chip.vz=(-vmax-vmin)*2-chip.vz;
   chip.xx=chip.xx+chip.vx;
   chip.yy=chip.yy+chip.vy;
   chip.zz=chip.zz+chip.vz/4;

   if(!chip.complete)
      {//if(chip.im.complete)
        {chip.complete=true;
         chip.xx = Math.random()* pageW; 
         chip.yy = Math.random()* pageH; 
         chip.zzmax=chip.im.width;
         chip.zz=chip.zzmax;
         visibilityChip(chipn,true);
        }
      }

   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+pageH-chip.h)
     {chip.yy=pageY+pageH-chip.h;
      chip.vy=-vmin-vmax*Math.random();
     }
   if(chip.yy<=pageY)
     {chip.yy=pageY;
      chip.vy=vmin+vmax*Math.random();
     }
   if(chip.zz>=chip.zzmax)
     {chip.zz=chip.zzmax;
      chip.vz=-vmin-vmax*Math.random();
     }
   if(chip.zz<=1)
     {chip.zz=1;
      chip.vz=vmin+vmax*Math.random();
     }
}

var allChipsTimer=null;

function fixNNbug()
 {stopThemAll();
  window.location=location+"";
 }

var oldonload=null;

function runThemAll()
{if(document.layers)
   {window.onresize=fixNNbug;}
 setTimeout("runThemAll2()",200);
}

function runThemAll2()
{
 getPageSizes();
 if(pageH>0)
  {for(var i=0;i<allChips.length;i++)
        {allChips[i].move(i);
         moveChip(i);
         if(allChips[i].move3D) {rescaleChip(i);}
        }
  }
 setTimeout("runThemAll2()",100);
}

function stopThemAll()
{if(allChipsTimer!=null)
    {clearTimeout(allChipsTimer);}
}

function createRandomChips()
{if(document.layers || document.all)
 {var move3D=createRandomChips.arguments[0];
  var thelength = createRandomChips.arguments.length;
  for (var i = 1; i < thelength; i+=2)   
    {var im = createRandomChips.arguments[i];
     var lnk= createRandomChips.arguments[i+1];
     n=allChips.length;
     allChips[n] = new makeChip('rnd'+i,20,20,im,lnk,'_self',chipRandomMove);
     allChips[n].move3D=move3D;
    } 
 }
}