function getHotkeysAds() {

    //set the width and height of the iframe
    document.getElementById("hotkeysAds").width = iframeWidth;
    document.getElementById("hotkeysAds").height = iframeHeight;

    //host serving ads
    var adHost = "http://js.enomsreseller.com";

    //parse this url
    var adUrl = adHost + "/ads";
    var thisUrl = document.URL;
    var targetParamName = "searchTerm";
    var targetParamValue = "";
    var hasQueryString = thisUrl.indexOf('?');
    if (hasQueryString != -1) {
        var nameValuePairs = thisUrl.substring(hasQueryString + 1, thisUrl.length);
        var hasTargetParamName = nameValuePairs.indexOf(targetParamName);
        if (hasTargetParamName != -1) {
            var targetEqualsIndex = hasTargetParamName + targetParamName.length + 1;
            var partialQueryString = nameValuePairs.substring(targetEqualsIndex, nameValuePairs.length);
            var hasAdditionalParams = partialQueryString.indexOf("&");
            if (hasAdditionalParams != -1) {
                var substringArray = partialQueryString.split("&");
                targetParamValue = substringArray[0];
            } else {
                targetParamValue = partialQueryString;
            }
        }
    }

    //set the hotkeys top category param
    adUrl += "?";
    if ( typeof( window[ 'hotkeysDomainId' ] ) != "undefined" )
    {
        adUrl += "HotKeysDomain=" + hotkeysDomainId;
        adUrl += "&";
    }
    if ( typeof( window[ 'hotkeysDomainName' ] ) != "undefined" )
    {
        adUrl += "HotkeysDomainName=" + hotkeysDomainName;
        adUrl += "&";
    }    
    adUrl += "HotKeysTopCategory=" + targetParamValue;
    adUrl += "&";
    adUrl += "includeRelatedSearches=" + includeRelatedSearches;
    adUrl += "&";
    adUrl += "fontFamily=" + fontFamily;
    adUrl += "&";
    adUrl += "listingTitleFontSize=" + listingTitleFontSize;
    adUrl += "&";
    adUrl += "listingDescFontSize=" + listingDescFontSize;
    adUrl += "&";
    adUrl += "bodyWidth=" + bodyWidth;
    adUrl += "&";
    adUrl += "titleFontColor=" + titleFontColor;
    adUrl += "&";
    adUrl += "relatedSearchesHeaderShading=" + relatedSearchesHeaderShading;
    adUrl += "&";
    adUrl += "listingWWWUrlLinkColor=" + listingWWWUrlLinkColor;
    adUrl += "&";
    adUrl += "backgroundColor=" + backgroundColor;
    adUrl += "&";
    adUrl += "listingTitleLinkColor=" + listingTitleLinkColor;
    adUrl += "&";
    adUrl += "listingDescColor=" + listingDescColor;
    adUrl += "&";
    adUrl += "relatedSearchesLinkColor=" + relatedSearchesLinkColor;

    // fetch the ads
    document.getElementById("hotkeysAds").src = adUrl;
}