window.open

<script type="text/javascript" language="javascript">

function popUpWindow(sURL, sName, width, height, menu, resize, scrollbar, status, title, toolbar)

        // Detect Default Value

        menu = typeof(menu) == 'undefined'?0:menu;

        resize = typeof(resize) == 'undefined'?0:resize;

        scrollbar = typeof(scrollbar) == 'undefined'?0:scrollbar;

        status = typeof(status) == 'undefined'?0:status;

        title = typeof(title) == 'undefined'?0:title;

        toolbar = typeof(toolbar) == 'undefined'?0:toolbar;

        ////////////////////////////////////////////////////////////////

       

        screenwidth = window.screen.width;

        screenheight = window.screen.height;

       

        var left = (screenwidth/2) - (width/2);

        var top = (screenheight/2) - (height/2);

       

        var newwin = window.open(sURL, sName, "top=" + top + ", left=" + left + ", height="+ height + ", width=" + width + ", menubar=" + menu + ", resizable=" + resize + ", scrollbars=" + scrollbar + ", status=" + status + ", titlebar=" + title + ", toolbar=" + toolbar + "");

        newwin.focus();

</script>