IE9 about asciimathml HOT 6 CLOSED

var isGecko = 0;
function init(){
    var msg, warnings = new Array();
    if (document.getElementById==null){
        alert("This webpage requires a recent browser such as Mozilla Firefox");
        return null;
    }
    if (checkForMathML && (msg = checkMathML())) warnings.push(msg);
    if (checkForMathML && isGecko>0 && (msg = AMcheckTeX())) warnings.push(msg);
    if (warnings.length>0) displayWarnings(warnings);
    if (!noMathML) initSymbols();
    return true;
}

function checkMathML(){
   if (navigator.product && navigator.product=='Gecko' && !navigator.userAgent.toLowerCase().match(/webkit/)) {
       var rv = navigator.userAgent.toLowerCase().match(/rv:\s*([\d\.]+)/);
       if (rv!=null) {
        rv = rv[1].split('.');
        if (rv.length<3) { rv[2] = 0;}
        if (rv.length<2) { rv[1] = 0;}
       }
       if (rv!=null && 10000*rv[0]+100*rv[1]+1*rv[2]>=10100) {
           isGecko = 10000*rv[0]+100*rv[1]+1*rv[2];
           noMathML = null;
       } else {
           noMathML = true;
       }
    }
    else if (navigator.appName.slice(0,9)=="Microsoft") {
        version = parseFloat(navigator.appVersion.split("MSIE")[1]);
        if (version >= 10) {
                noMathML = true;
        } else {
          try {
        var ActiveX = new ActiveXObject("MathPlayer.Factory.1");
        noMathML = null;
          } catch (e) {
        noMathML = true;
          }
        }
    } else noMathML = true;
    if (noMathML && notifyIfNoMathML) {
            var msg = "To view the ASCIIMathML notation use Internet Explorer + MathPlayer or Mozilla Firefox 2.0 or later.";
            if (alertIfNoMathML)
                    alert(msg);
            else return msg;
    }
}
function AMBBoxFor(s) {
    document.getElementById("hidden").innerHTML = 
      '<nobr><span class="typeset"><span class="scale">'+s+'</span></span></nobr>';
      var bbox = {w: document.getElementById("hidden").offsetWidth, h: document.getElementById("hidden").offsetHeight};
      document.getElementById("hidden").innerHTML = '';
      return bbox;
}
//check for TeX font based on approach from jsMath
function AMcheckTeX() {
    hiddendiv = document.createElement("div");
    hiddendiv.style.visibility = "hidden";
    hiddendiv.id = "hidden";
    document.body.appendChild(hiddendiv);
    if (isGecko<10900) { //Mozilla 1.8 could use cmex fonts; Mozilla 1.9 only works well with STIX
        wh = AMBBoxFor('<span style="font-family: STIXgeneral, cmex10, serif">&#xEFE8;</span>');
    } else {
        wh = AMBBoxFor('<span style="font-family: STIXgeneral, serif">&#xEFE8;</span>');
    }
    wh2 = AMBBoxFor('<span style="font-family: serif">&#xEFE8;</span>');
    nofonts = (wh.w==wh2.w && wh.h==wh2.h);
    if (nofonts) {
        noMathML = true;
    } else {
        noMathML = false;
    }
    if (noMathML && notifyIfNoMathML) {
            var msg = "To view the ASCIIMathML notation, install STIX fonts, available at stixfonts.org";
            if (alertIfNoMathML)
                    alert(msg);
            else return msg;
        }
}

<math>
  <mo stretchy="true" id="AM_test_paren">(</mo>
  <mpadded height="200%" id="AM_test_padded">
    <mo stretchy="false">(</mo>
  </mpadded>
</math>

<math displaystyle="true">
  <mo stretchy="true" id="AM_test_paren1">(</mo>
  <mfrac><mo id="AM_test_paren2">(</mo><mo>)</mo></mfrac>
</math>