jsp+javascript打造级连菜单_MySQL

<%@ page import="java.util.Date,yava.fileapp.*,java.sql.*;"
cOntentType="text/html;charset=GB2312" pageEncoding="GB2312"
%>


function rv()
{
var val="";
for(i=0;i val+=","+combo_box.list2[i].value;
}
if(val.charAt(0)==","){
val=val.substr(1,val.length);
}
opener.form1.frecname.value=val;
self.close();
}