//弹出一个对话框 参数的顺序: url, iWidth, iHeight, vArguments

function openDialog() {

    var url, len = arguments.length, sFeatures, ret;

    if (len == 1) {

        url = arguments[0];

        var iWidth = 800; //弹出窗口的宽度;

        var iHeight = 600;  //弹出窗口的高度;

        return window.showModalDialog(url, "", "dialogWidth=" + iWidth + "px;dialogHeight=" + iHeight + "px;status=no;");

    }

    else {

        url = arguments[0];

        iWidth = arguments[1];

        iHeight = arguments[2];

        sFeatures = "dialogWidth=" + iWidth + "px;dialogHeight=" + iHeight + "px;status=no;";

        if (len == 3) ret = window.showModalDialog(url, "", sFeatures);

        else if (len == 4) ret = window.showModalDialog(url, arguments[3], sFeatures);

        return ret;

    }

}

//弹出一个新窗口 isres:是否可调整大小

function windowOpen(url, iWidth, iHeight, isres) {

    var iTop = (window.screen.availHeight - 30 - iHeight) / 2; //获得窗口的垂直位置;

    var iLeft = (window.screen.availWidth - 10 - iWidth) / 2;  //获得窗口的水平位置;

    var rs;

    if (isres == undefined) rs = 'no';

    else rs = 'yes';

    window.open(url, "_blank", 'height=' + iHeight + ',width=' + iWidth + ',top=' + iTop + ',left=' + iLeft +

        ',toolbar=no,menubar=no,scrollbars=no,resizable=' + rs + ',location=no,status=no ');

}

openDialog('/test/test3.aspx?r=' + Math.random(), 1200, 600, window);//打开对话框

windowOpen('/test/test3.aspx?r=' + Math.random(), 1200, 600);//打开新窗口