/// <reference path="jquery-1.2.6-vsdoc.js" />

function check_code() {

    var code = document.getElementById("wlt6").value;
    if (code == null) {
        alert("请输入物流编码");
        return;
    }
    if (code.length != 13) {
        alert("请输入13位物流编码");
        return;
    }
    
    
    document.Form1.action = 'code_verify.aspx';
    document.Form1.target = "_self";
    document.getElementById("qf").value = "1";

    document.Form1.submit();


}