function openWindow(anchor, options) {

    var args = '';

    if (typeof (options) == 'undefined') { var options = new Object(); }
    if (typeof (options.name) == 'undefined') { options.name = 'win' + Math.round(Math.random() * 100000); }

    if (typeof (options.height) != 'undefined' && typeof (options.fullscreen) == 'undefined') {
        args += "height=" + options.height + ",";
    }

    if (typeof (options.width) != 'undefined' && typeof (options.fullscreen) == 'undefined') {
        args += "width=" + options.width + ",";
    }

    if (typeof (options.fullscreen) != 'undefined') {
        args += "width=" + screen.availWidth + ",";
        args += "height=" + screen.availHeight + ",";
    }

    if (typeof (options.center) == 'undefined') {
        options.x = 0;
        options.y = 0;
        args += "screenx=" + options.x + ",";
        args += "screeny=" + options.y + ",";
        args += "left=" + options.x + ",";
        args += "top=" + options.y + ",";
    }

    if (typeof (options.center) != 'undefined' && typeof (options.fullscreen) == 'undefined') {
        options.y = Math.floor((screen.availHeight - (options.height || screen.height)) / 2) - (screen.height - screen.availHeight);
        options.x = Math.floor((screen.availWidth - (options.width || screen.width)) / 2) - (screen.width - screen.availWidth);
        args += "screenx=" + options.x + ",";
        args += "screeny=" + options.y + ",";
        args += "left=" + options.x + ",";
        args += "top=" + options.y + ",";
    }

    if (typeof (options.scrollbars) != 'undefined') { args += "scrollbars=1,"; }
    if (typeof (options.menubar) != 'undefined') { args += "menubar=1,"; }
    if (typeof (options.locationbar) != 'undefined') { args += "location=1,"; }
    if (typeof (options.resizable) != 'undefined') { args += "resizable=1,"; }

    var win = window.open(anchor, options.name, args);
    return false;

}