// all further ASCIIMathML global variables start with "AM"
  
  function AMcreateElementXHTML(t) {
    if (isIE) return document.createElement(t);
    else return document.createElementNS("http://www.w3.org/1999/xhtml",t);
  }
  
  function AMnoMathMLNote() {
    var nd = AMcreateElementXHTML("h3");
    nd.setAttribute("align","center")
    nd.appendChild(AMcreateElementXHTML("p"));
    nd.appendChild(document.createTextNode("To view the "));
    var an = AMcreateElementXHTML("a");
    an.appendChild(document.createTextNode("ASCIIMathML"));
    an.setAttribute("href","http://www.chapman.edu/~jipsen/asciimath.html");
    nd.appendChild(an);
    nd.appendChild(document.createTextNode(" notation use Internet Explorer 6+"));  
    an = AMcreateElementXHTML("a");
    an.appendChild(document.createTextNode("MathPlayer"));
    an.setAttribute("href","http://www.dessci.com/en/products/mathplayer/download.htm");
    nd.appendChild(an);
    nd.appendChild(document.createTextNode(" or Netscape/Mozilla/Firefox"));
    nd.appendChild(AMcreateElementXHTML("p"));
    return nd;
  }
  
  function AMisMathMLavailable() {
    if (navigator.appName.slice(0,8)=="Netscape") 
      if (navigator.appVersion.slice(0,1)>="5") return null;
      else return AMnoMathMLNote();
    else if (navigator.appName.slice(0,9)=="Microsoft")
      try {
          var ActiveX = new ActiveXObject("MathPlayer.Factory.1");
          return null;
      } catch (e) {
          return AMnoMathMLNote();
      }
    else return AMnoMathMLNote();
  }