document.player.intsec.value

Question

function playImg()
  {
    t_end=document.player.intsec.value;
if (t==<%=picNumber%>)
   {
    t=0;
   }
   else
   {t++;}
if (t==<%=picNumber%>)
   {
    t_end=5000;
   }
if (goid==0){
  img.style.filter="blendTrans(Duration=1)";
  img.filters[0].apply();
  img.src=ImgName[t];
  tIndex=t;
  img.filters[0].play();
  mytimeout=setTimeout("playImg()",t_end);
}
   }document.player.intsec  为空或不是对象