js 联接access数据库

var conn = new ActiveXObject("Adodb.Connection"); 
var filePath = location.href.substring(0, location.href.indexOf("1.html"));
var path = filePath + "guanggao.mdb";
path = path.substring(8);
document.write(path)
conn.Provider = "Microsoft.Jet.oledb.4.0";
conn.ConnectionString ="data source="+path;
document.write("3")
conn.open;
document.write("4")
var rs = new ActiveXObject("ADODB.Recordset");   
rs.open("select * from youxiajiao where zt=0", conn)
if(rs.eof)
    {
        rs.close();
        rs = null;
        rs = new ActiveXObject("ADODB.Recordset");
        conn.execute("update youxiajiao set zt=0");
        rs.close();
        rs = null;
        rs = new ActiveXObject("ADODB.Recordset");   
        rs.open("select * from youxiajiao where zt=0", conn);    
    }
var id1=rs.Fields("id");
var title1=rs.fields("title");
var url1=rs.fields("url");
rs.close();
rs = null;
rs = new ActiveXObject("ADODB.Recordset");
conn.execute("update youxiajiao set zt=1 where id="+id1);
rs.close();
rs = null;
conn.close(); 
conn = null;