String.prototype.isArgument = function () {
    return /^([a-zA-Z]){1,}=([0-9]){1,}$/.test(this);
}


/*
call this function just work like window.open(url,name,feature);
however, for IE5.0+, it will open a showModelessDialog window;
and For Gecko(Mozilla or Netscape), the child window will stay on top focus untill user close it.
programmed by hedger
hedger@yahoo-inc.com
*/


function dialog(url, name, feature, isModal) {
    if (url == null) { return false; }
    url = url
    if (name == null) { name = "" }
    if (feature == null) { feature = "" };
    if (window.showModelessDialog) {
        var WindowFeature = new Object();
        WindowFeature["width"] = 400;
        WindowFeature["height"] = 400;
        WindowFeature["left"] = "";
        WindowFeature["top"] = "";
        WindowFeature["resizable"] = "";

        if (feature != null && feature != "") {
            feature = (feature.toLowerCase()).split(",");

            for (var i = 0; i < feature.length; i++) {
                if (feature[i].isArgument()) {
                    var featureName = feature[i].split("=")[0];
                    var featureValue = feature[i].split("=")[1];

                    if (WindowFeature[featureName] != null) { WindowFeature[featureName] = featureValue; }
                }
            }
        }

        if (WindowFeature["resizable"] == 1 || WindowFeature["resizable"] == "1" || WindowFeature["resizable"].toString().toLowerCase() == "yes") { WindowFeature["resizable"] = "resizable:1;minimize:1;maximize:1;" }
        if (WindowFeature["left"] != "") { WindowFeature["left"] = "dialogLeft:" + WindowFeature["left"] + "px;"; }
        if (WindowFeature["top"] != "") { WindowFeature["top"] = "dialogTop:" + WindowFeature["Top"] + "px;"; }
        if (window.ModelessDialog == null) { window.ModelessDialog = new Object(); };
        if (name != "") {
            if (window.ModelessDialog[name] != null && !window.ModelessDialog[name].closed) {
                window.ModelessDialog[name].focus();
                return window.ModelessDialog[name];
            }
        }
        var F = WindowFeature["left"] + WindowFeature["top"] + "dialogWidth:" + WindowFeature["width"] + " px;dialogHeight:" + WindowFeature["height"] + "px;center:1;help:0;" + WindowFeature["resizable"] + "status:0;unadorned:0;edge: raised; ;border:thick;"
        if (isModal) {
            window.showModalDialog(url, self, F);
            return false;
        }
        else {
            window.ModelessDialog[name] = window.showModelessDialog(url, self, F);
            return window.ModelessDialog[name];
        }
    }
    else {
        if (document.getBoxObjectFor) {


            if (isModal) {
                var Modal = window.open(url, name, "modal=1," + feature);
                var ModalFocus = function () {
                    if (!Modal.closed) { Modal.focus(); }
                    else { Modal = null; window.removeEventListener(ModalFocus, "focus"); ModalFocus = null; };
                }
                window.addEventListener("focus", ModalFocus, false);
                return false;
            }
            else {
                return window.open(url, name, "modal=1," + feature);
            }
        }
        else {
            return window.open(url, name, feature);
        }
        //
    }
    return null;
}




function modal(url, feature) {
    dialog(url, "", feature, true);
    return false;
}