初学者求解单选钮触发选择框

菜鸟求解单选钮触发选择框
<script   language= "javascript "   type= "text/javascript ">
var   a_city   =   new   array();
a_city[0]   =   new   array( "c0 ", "c0char ")
a_city[1]   =   new   array( "c1 ", "c1char ")
a_city[2]   =   new   array( "c2 ", "c2char ")
</script>
<script   language= "javascript "   type= "text/javascript ">
function   oClick(m,n)
{
var   o   =   getRef( "ctrl ");
if(!n)
{
o.disabled   =   "disabled ";
}
else
{
o.disabled   =   " ";
if(a_city.length   >   1)
{
addSel2( "sel1 ",a_city,1);
}
}
}

</script>
<input   type= "radio "   name= "ctrl "   value= "1 "   onclick= "oClick(this.value,0) "   /> 1
<select   name= "sel1 "   disabled= "disabled "   id= "ctrl "> </select>


错在哪里

------解决方案--------------------
兄弟你想要什么结果?
你写的什么代码呀?
array 错.
Array
getRef?addSel2?