這段代碼怎麼運行不了!
<!DOCTYPE   HTML   PUBLIC    "-//W3C//DTD   HTML   4.0   Transitional//EN ">  
  <html>  
  <head>  
  <title> Demo </title>  
  <meta   http-equiv= "Cache-Control "   content= "no-cache ">  
  <meta   http-equiv= "content-type "   content= "text/html;charset=utf-8 ">  
  <script   type= "text/javascript "   src= "prototype.js ">  </script>  
  </head>  
  <   script   LANGUAGE= "javascript "   >  
 var   onecount;    
 onecount=0;    
 subcat   =   new   Array();    
 subcat[0]   =   new   Array( "徐汇区 ", "01 ", "001 "); 
 subcat[1]   =   new   Array( "嘉定区 ", "01 ", "002 ");    
 subcat[2]   =   new   Array( "黄浦区 ", "01 ", "003 ");    
 subcat[3]   =   new   Array( "南昌市 ", "02 ", "004 ");    
 subcat[4]   =   new   Array( "九江市 ", "02 ", "005 ");    
 subcat[5]   =   new   Array( "上饶市 ", "02 ", "006 ");    
 onecount=6;    
 function   changelocation(locationid)    
             {    
             document.myform.smalllocation.length   =   0;         
             var   locationid=locationid;    
             var   i;    
             document.myform.smalllocation.options[0]   =   new   Option( '====所有地区==== ', ' ');    
             for   (i=0;i    <      onecount;   i++)    
                         {    
                                     if   (subcat[i][1]   ==   locationid)    
                                     {       
                                     document.myform.smalllocation.options[document.myform.smalllocation.length]    
    =   new   Option(subcat[i][0],   subcat[i][2]);    
                                     }                            
                         }                                 
             }    
  <   /script   >  
  <   body   >     
  <   form   name= "myform "   method= "post "   >     
              <   select   name= "biglocation "       
 onChange= "changelocation(document.myform.biglocation.options[document.myform.biglocation.selectedIndex].value) "   >     
                          <   option   value= "01 "   selected   > 上海 <   /option   >     
                          <   option   value= "02 "   > 江西 <   /option   >