var nIndex = 0;
var d=document;
var nMaxIndex;
var nStart=0;
var bRotate;
var nTimerID = null;
var fTimeOut = 2000 / 8.0;
var picArray = new Array();

function preloadRotation(szPath, nMax, szExt) {
  if(d.images) { 
    nMaxIndex = nMax + 1;
    var i;
    for(i=0; i<nMaxIndex; i++) { 
      picArray [i]=new Image;
      if (i<10) {
        szName = szPath + '0';
      } else {
        szName = szPath;
      }
      picArray[i].src=szName + i + '.' + szExt;  
    }
  bRotate = 1;
  nTimerID = setTimeout('rotate()',fTimeOut)
  }
}

function rotate() 
{  
  if (bRotate==1)
  {
   clearTimeout(nTimerID);
  nIndex = (nIndex + 1) % nMaxIndex;
  if (document.layers) window.document.layers.divrotate.document.images.Car3D.src = picArray[nIndex].src;
  if (!document.layers) window.document.all.Car3D.src = picArray[nIndex].src;
  if (nIndex==0) {bRotate=0;}
  nTimerID = setTimeout('rotate()',fTimeOut);
  }
}

function stopRotateManual() {
  if (bRotate != 1) clearTimeout(nTimerID);
}

function startRotate() {
  if (bRotate != 1) {
    bRotate = 1;
     clearTimeout(nTimerID);
    nTimerID = setTimeout('rotate()',fTimeOut);
  }
}

function rotateManual(nDir){
  clearTimeout(nTimerID);
  nIndex = (nIndex + nMaxIndex + nDir) % nMaxIndex;
  if (document.layers) window.document.layers.divrotate.document.images.Car3D.src = picArray[nIndex].src;
  if (!document.layers) window.document.images.Car3D.src = picArray[nIndex].src;

  bRotate = 0;
  szAction = 'rotateManual(' + nDir + ')';
  nTimerID = setTimeout(szAction,fTimeOut);
}