var wnd;

function opendocs(url, height)

{

    width=300;

    height=350;

    l = screen.width - width - 20;

    t = screen.height - height - 150;

    if (wnd && wnd.closed == false){

        wnd.close();

        wnd = false;

    }

    if (!height){

        wnd = window.open(url, "_blank", "top="+t+",left="+l+",toolbar=0,status=0,location=0,menubar=0,directories=0,resizeable=1,scrollbars=1,width="+width);

    }else{

        wnd = window.open(url, "_blank", "top="+t+",left="+l+",toolbar=0,status=0,location=0,menubar=0,directories=0,resizeable=1,scrollbars=1,width="+width+",height="+height);

    }

}