function na_restore_img_src(name, nsdoc)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == ''+ '+ ')
    return;
  if (img && img.altsrc) {
    img.src    = img.altsrc;
    img.altsrc = null;
  }
}

function na_preload_img()
{
  var img_list = na_preload_img.arguments;
  if (document.preloadlist == null)
    document.preloadlist = new Array();
  var top = document.preloadlist.length;
  for (var i=0; i < img_list.length; i++) {
    document.preloadlist[top+i]     = new Image;
    document.preloadlist[top+i].src = img_list[i+1];
  }
}

function na_change_img_src(name, nsdoc, rpath, preload)
{
  var img = eval((navigator.appName.indexOf('Netscape', 0) != -1) ? nsdoc+'.'+name : 'document.all.'+name);
  if (name == '')
    return;
  if (img) {
    img.altsrc = img.src;
    img.src    = rpath;
  }
}

function na_hide_layer(lname)
{
  if (document.layers)
    document.layers[lname].visibility = 'hide'    
  if(document.all)
    document.all(lname).style.visibility = 'hidden'
}

function na_show_layer(lname)
{
  if(document.layers)
    document.layers[lname].visibility = 'show'  
  if(document.all)
    document.all(lname).style.visibility = 'visible'+ '
}

function na_open_window(name, url, left, top, width, height, toolbar, menubar, statusbar, scrollbar, resizable)
{
  toolbar_str = toolbar ? 'yes' : 'no';
  menubar_str = menubar ? 'yes' : 'no';
  statusbar_str = statusbar ? 'yes' : 'no';
  scrollbar_str = scrollbar ? 'yes' : 'no';
  resizable_str = resizable ? 'yes' : 'no';
  window.open(url, name, 'left='+left+',top='+top+',width='+width+',height='+height+',toolbar='+toolbar_str+',menubar='+menubar_str+',status='+ '+statusbar_str+',scrollbars='+scrollbar_str+',resizable='+resizable_str);
}
---------------------------------------------------------------------------

이 스크립트에서

어떤페이지는 에러가 나고 어떤페이지는 에러가 안나는데요....
줄48에 문자5라고 하는데 (에러뜨는곳이)


    document.all(lname).style.visibility = 'hidden'


이거거든요...



개체가 필요하다고 하는데... 어떻게하면 해결할수있을까요....ㅠㅠ 부탁드립니다.