js 连接access数据库

JScript code

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; 

执行到 conn.open 就出错 为什么啊

[解决办法]
膜拜下~~我都是用异步到服务器端连接的。。。这样若可以，那效率也不高吧！还有如何保证安全？数据库都暴露了。