var Popup = {
    open: function(options) {
        this.options = {
            url: '#',
            width: 600,
            height: 500,
            name: "_blank",
            location: "no",
            menubar: "no",
            toolbar: "no",
            status: "yes",
            scrollbars: "yes",
            resizable: "yes",
            left: "",
            top: "",
            normal: false
        }
        Object.extend(this.options, options || {});

        if (this.options.normal) {
            this.options.menubar = "yes";
            this.options.status = "yes";
            this.options.toolbar = "yes";
            this.options.location = "yes";
        }

        this.options.width = this.options.width < screen.availWidth ? this.options.width : screen.availWidth;
        this.options.height = this.options.height < screen.availHeight ? this.options.height : screen.availHeight;
        var openoptions = 'width=' + this.options.width + ',height=' + this.options.height + ',location=' + this.options.location + ',menubar=' + this.options.menubar + ',toolbar=' + this.options.toolbar + ',scrollbars=' + this.options.scrollbars + ',resizable=' + this.options.resizable + ',status=' + this.options.status
        if (this.options.top != "") openoptions += ",top=" + this.options.top;
        if (this.options.left != "") openoptions += ",left=" + this.options.left;
        window.open(this.options.url, this.options.name, openoptions);
        return false;
    }
}