Edit in JSFiddle

// variable to define the http request
var request = new XMLHttpRequest();

// call the mysafeinfo api to get the data
request.open("GET", "https://mysafeinfo.com/api/data?list=nflteams&format=xml&alias=team=name&select=team,conference&elementname=team&case=lower", true);

// send the request
request.send();

// check onreadystatechange for the response from the http request
request.onreadystatechange = function () {
    // make sure the response is ready
    if (request.readyState == 4 && request.status == 200) {
        BindData(request.responseText);
    }
};

function BindData(XmlData) {
    // variables
    var xmlDoc;
    var xslDoc;
    var xslTemplate;
    var xslProcessor;
    var xslFragment;
    var SortExpression = "";
    var SortDirection = "";
    var SortType = "";

    // get reference to xslt
    var XslData = document.getElementById("xsl").textContent;

    // get reference to output div
    var pnlResults = $("#pnlResults");

    // check for window.XSLTProcessor which would indicate Firefox, Chrome, etc
    // if no window.XSLTProcessor then fall back to IE
    if (window.XSLTProcessor) {
        // Firefox, Chrome, etc
        
        // instantiate and load the xml document
        xmlDoc = new DOMParser().parseFromString(XmlData, "text/xml");

        // instantiate and load the xsl document
        xslDoc = new DOMParser().parseFromString(XslData, "text/xml");

        // instantiate the document processor and submit the xsl document
        xslProcessor = new XSLTProcessor();
        xslProcessor.importStylesheet(xslDoc);

        // add parameters to the xsl document
        xslProcessor.setParameter(null, "SortExpression", SortExpression);
        xslProcessor.setParameter(null, "SortDirection", SortDirection);
        xslProcessor.setParameter(null, "SortType", SortType);

        // transform xml with xsl
        xslFragment = xslProcessor.transformToFragment(xmlDoc, document);

        // output to target
        pnlResults.empty().append(xslFragment);
    } else {
        // IE 
        pnlResults.empty().append("This code works in Internet Explorer; however, ActiveXObject is not supported in JSFiddle.");
        return;
        
        // instantiate and load the xml document
        xmlDoc = new ActiveXObject("MSXML2.DOMDocument");
        xmlDoc.loadXML(XmlData);

        // instantiate and load the xsl document
        xslDoc = new ActiveXObject("MSXML2.FreeThreadedDOMDocument");
        xslDoc.loadXML(XslData);

        // prepare the xsl document for transformation
        xslTemplate = new ActiveXObject("MSXML2.XSLTemplate");
        xslTemplate.stylesheet = xslDoc;

        // instantiate the document processor and submit the xml document
        xslProcessor = xslTemplate.createProcessor();
        xslProcessor.input = xmlDoc;

        // add parameters to the xsl document
        xslProcessor.addParameter("SortExpression", SortExpression, "");
        xslProcessor.addParameter("SortDirection", SortDirection, "");
        xslProcessor.addParameter("SortType", SortType, "");

        // transform xml with xsl
        xslProcessor.transform();

        // output to target
        pnlResults.empty().append(xslProcessor.output);
    }
}

<div id="pnlResults"></div>

<script id="xsl" type="application/xml">
    <xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
        <xsl:output media-type="html" omit-xml-declaration="yes" indent="yes" />
        
        <!-- variables -->
        <xsl:param name="SortExpression" />
        <xsl:param name="SortDirection" />
        <xsl:param name="SortType" />
        
        <!-- template -->
        <xsl:template match="/">
            <table border="0" cellpadding="3" cellspacing="0">
                <thead>
                    <tr>
                        <th align="left" style="width: 100px">Conference</th>
                        <th align="left">Team</th>
                    </tr>
                </thead>
                <tbody>
                    <xsl:apply-templates select="//team">
                        <xsl:sort select="@name" />
                    </xsl:apply-templates>
                </tbody>
            </table>
        </xsl:template>
        
        <!-- template -->
        <xsl:template match="team">
            <tr>
                <td>
                    <xsl:value-of select="@conference" />
                </td>
                <td>
                    <xsl:value-of select="@name" />
                </td>
            </tr>
        </xsl:template>
    </xsl:stylesheet>
</script>