function ngn_GetCookie (name) {
    var arg  = name + "=";
    var alen = arg.length;
    var clen = document.cookie.length;
    var i = 0;

    while (i < clen) {
        var j = i + alen;

        if (document.cookie.substring(i, j) == arg)
            return ngn_CookieVal (j);

        i = document.cookie.indexOf(" ", i) + 1;
        if (i == 0)
            break;
    }

    return null;
}
/** ngn::js -> carica un css */
function ngn_loadCss(cssName) {

   if (document.layers){
      document.write("<link rel='stylesheet' href='/css/ns_" + cssName + ".css' type='text/css'>");
   }
   else {
      document.write("<link rel='stylesheet' href='/css/default_" + cssName + ".css' type='text/css'>");
   }
}

/** ngn:js -> carica uno stile */
function ngn_loadFace(faceName) {
   var width = '';

   if (faceName) {
       if (faceName == '1') {
          width = "981";  //1024x768
       }
   }

   if (width == '') {
      width = "761";  //800x600
      faceName = '0';
   }

   ngn_loadCss(faceName);

   document.write("<table width=" + width + " cellspacing=0 cellpadding=0 border=0 align=center><tr><td>");
}

/** ngn::js -> tail di una pagina dell'ngn */
function ngn_closeFace() {
  document.write("</td></tr></table>");
}
ngn_userstyle = ngn_GetCookie("my_res");
ngn_loadFace(ngn_userstyle);