为啥老提示 'rmopo' 未定义

为什么老提示 'rmopo' 未定义？
这段程序是我从网上下的，以前用没什么问题，可是现在却提示 rmopo 未定义。我第一行不就定义了吗？我估计是字符编码出现问题了。哪位高手能帮我看看到底是哪出了问题，多谢了。
<!--Combobox-->
function combobox(sobj,obj2,obj3,obj4,obj5,obj6,obj7,al_v,al_t,zhiwu,youxiang,shouji,dianhua,dizhi,bumen)
{

 var rmopo = window.createPopup();
 
 function rm(i,oct,h)
 {  
  var i2=eval(i);
  var oct=eval(oct);
  var w=eval(i).offsetWidth;
  var h=eval(h);
  var lefter = i2.offsetLeft-1; var topper = i2.offsetHeight;
  rmopo.document.body.innerHTML = oct.innerHTML;
  rmopo.document.body.style.border="1px solid #3162A6";
  rmopo.document.body.style.background="#F6F6F6";
  rmopo.show(lefter, topper, w, h, i2);
 }

 loadcombobox(sobj,obj2,obj3,obj4,obj5,obj6,obj7,al_v,al_t,zhiwu,youxiang,shouji,dianhua,dizhi,bumen);

 function loadcombobox(obj,obj2,obj3,obj4,obj5,obj6,obj7,al_v,al_t,zhiwu,youxiang,shouji,dianhua,dizhi,bumen)
 {
  var obj = eval(obj)
  var obj2 = eval(obj2)
  var obj3 = eval(obj3)
  var obj4 = eval(obj4)
  var obj5 = eval(obj5)
  var obj6 = eval(obj6)
  var obj7 = eval(obj7)
  theListArrayV = al_v;
  theListArrayT = al_t;
  theListArrayZhiwu=zhiwu;
  theListArrayYouxiang=youxiang;
  theListArrayShouji=shouji;
  theListArrayDianhua=dianhua;
  theListArrayDizhi=dizhi;
  theListArrayBumen=bumen;

  var tempStr='<DIV id="'+obj.id+'showcombox" style="position:relative;visibility:hidden">'
  +'<DIV class="ac_menu" id="'+obj.id+'ListDiv" style="FONT-SIZE: 12px; Z-INDEX: 10; POSITION: absolute;OVERFLOW-Y:auto; WIDTH:expression('+obj.offsetWidth+'-1);">'
  for(var i=0;i<theListArrayV.length;i++)
  tempStr+='<DIV class="ac_menuitem" onmouseover="this.style.backgroundColor=\'#D6DEEC\';" onmouseout="this.style.backgroundColor=\'\';" onclick="this.selectedflag=1;parent.document.all.'+obj.id+'.value=this.value;parent.document.all.'+obj2.id+'.value=\''+htmlEncode(theListArrayZhiwu[i])+'\';parent.document.all.'+obj3.id+'.value=\''+htmlEncode(theListArrayYouxiang[i])+'\';parent.document.all.'+obj4.id+'.value=\''+htmlEncode(theListArrayShouji[i])+'\';parent.document.all.'+obj5.id+'.value=\''+htmlEncode(theListArrayDianhua[i])+'\';parent.document.all.'+obj6.id+'.value=\''+htmlEncode(theListArrayDizhi[i])+'\';parent.document.all.'+obj7.id+'.value=\''+htmlEncode(theListArrayBumen[i])+'\';parent.document.all.'+obj.id+'.blur();" style="cursor:default;" value="'+htmlEncode(theListArrayV[i])+'" textvalue="'+htmlEncode(theListArrayT[i])+'">'+htmlEncode(theListArrayT[i])+'</DIV>';
  tempStr+='</DIV></DIV>';

  obj.insertAdjacentHTML("afterEnd",tempStr);
  obj.onfocus=AC_OnFocus;
  obj.onclick=AC_OnFocus;
  obj.onblur=AC_OnBlur;
  obj.onkeydown=AC_OnKeyDown;
  obj.autoComplete="off";
  obj.onpropertychange=AC_OnPropertyChange;
 }

 function AC_OnFocus(obj)
 {
  if(obj==null) obj=event.srcElement;
  popmenu=eval(obj.id+"showcombox");
  rm(obj,popmenu,130);
  AC_OnPropertyChange(obj);
 }


 function AC_OnBlur(obj)
 {
  rmopo.hide();
 }

 function AC_OnPropertyChange(obj)
 {
  if(obj==null) obj=event.srcElement;

  var dv = eval("rmopo.document.all['"+obj.id+"ListDiv']");
  theListDiv = dv
  if(theListDiv==null) return ;
  var theListDivChildren=theListDiv.children;

  theListDiv.selectedIndex=-1;
  var theFirstVisibleIndex=-1;

  var objValue=obj.value;

  for(var i=0;i<theListDivChildren.length;i++)
  {
  if(theListDiv.children[i].textvalue.indexOf(objValue)==0)
  {
  if(theFirstVisibleIndex==-1) theFirstVisibleIndex=i;
  theListDivChildren[i].style.backgroundColor="#F6F6F6";
  theListDivChildren[i].style.display="";
  }
  else
  theListDivChildren[i].style.display="none";
  if(theListDiv.selectedIndex==-1 && theListDiv.children[i].textvalue==objValue)
  {
  theListDiv.selectedIndex=i;
  }
  }
  if(theListDiv.selectedIndex==-1 && theFirstVisibleIndex!=-1) 
  {
  theListDiv.selectedIndex=theFirstVisibleIndex;
  }
  if(theListDiv.selectedIndex!=-1)
  {
  theListDiv.children[theListDiv.selectedIndex].style.backgroundColor="#D6DEEC";
  }
  adjustListDivScroll(obj);
 }

 function AC_OnKeyDown(obj)
 {
  if(obj==null) obj=event.srcElement;

  var AC_TAB = 9;
  var AC_ENTER = 13;
  var AC_UP_ARROW = 38;
  var AC_DOWN_ARROW = 40;

  var dv = eval("rmopo.document.all['"+obj.id+"ListDiv']");
  theListDiv = dv
  if(theListDiv==null) return ;

  var keyCode=event.keyCode;
  if(keyCode==AC_ENTER) keyCode=event.keyCode=AC_TAB;

  if(keyCode==AC_TAB && theListDiv.selectedIndex!=-1) 
  {
  obj.value=theListDiv.children[theListDiv.selectedIndex].value;
  rmopo.hide() ;
  }
  
  if(keyCode==AC_UP_ARROW && theListDiv.selectedIndex!=-1)
  {
  for(var i=theListDiv.selectedIndex-1;i>-1;i--)
  {
  if(theListDiv.children[i].style.display!="none")
  {
  theListDiv.children[theListDiv.selectedIndex].style.backgroundColor="#F6F6F6";
  theListDiv.selectedIndex=i;
  theListDiv.children[theListDiv.selectedIndex].style.backgroundColor="#D6DEEC";
  adjustListDivScroll(obj);
  break;
  }
  }
  }
 
  if(keyCode==AC_DOWN_ARROW && theListDiv.selectedIndex!=-1)
  {
  for(var i=theListDiv.selectedIndex*1+1;i<theListDiv.children.length;i++)
  {
  if(theListDiv.children[i].style.display!="none")
  {
  theListDiv.children[theListDiv.selectedIndex].style.backgroundColor="#F6F6F6";
  theListDiv.selectedIndex=i;
  theListDiv.children[theListDiv.selectedIndex].style.backgroundColor="#D6DEEC";
  adjustListDivScroll(obj);
  break;
  }
  }
  return;
  }
 
 }

 function adjustListDivScroll(obj)
 {
  if(obj==null) obj=event.srcElement;

  var dv = eval("rmopo.document.all['"+obj.id+"ListDiv']");
  theListDiv = dv

  if ( theListDiv==null || theListDiv.selectedIndex==-1 ) return ;
  var i=theListDiv.selectedIndex;
  if((theListDiv.children[i].offsetTop<theListDiv.scrollTop)||(theListDiv.children[i].offsetTop>theListDiv.scrollTop+120))
  theListDiv.scrollTop=theListDiv.children[i].offsetTop-85;
 }

 function htmlEncode(str)
 {
  if(str==null) return "";
  str=str.replace(/</ig,"&lt;")

  str=str.replace(/>/ig,"&gt;");
  str=str.replace(/"/ig,"&quot;");
  return str;
 }
}
<!--end-->

[解决办法]
var rmopo = window.createPopup(); 中的window.createPopup函数在整个程序中我都没有见到定义!
[解决办法]
好像是哦！只是初始化了！但并未定义！
[解决办法]
应该还有一些JS,LZ没有下载下来
[解决办法]