Creating a Static Map Req with Route Response Data

        function callback(data, stops) {
            $("#results").val(JSON.stringify(data, undefined, 4));

            var bbox = data.route.boundingBox;
            var sesh = data.route.sessionId;

            var url = constructStaticMapURL(sesh, bbox, stops, $(window).width(), $(window).height());
            showImage(url, $(window).width(), $(window).height())
        }

        function constructStaticMapURL(sessionID, boundingBox, stops, width, height) {
            var stopsString = ''
            if(stops.length > 0) {
                stopsString = '&locations='
                for(var i = 0; i < stops.length; i++) {
                    stopsString += stops[i]
                    stopsString += '|marker-' + (i+1)
                    if(i + 1 < stops.length) {
                        stopsString += '||'
                    }
                }
                console.log(stopsString)
            }
            var ullat, ullong, lrlat, lrlong;
            ullat = boundingBox.ul.lat;
            ullong = boundingBox.ul.lng;
            lrlat = boundingBox.lr.lat;
            lrlong = boundingBox.lr.lng;
            var URL = 'https://www.mapquestapi.com/staticmap/v5/map?' + 'key=' + key
            + '&session=' + sessionID + stopsString
            + '&boundingBox=' + ullat + ','
            + ullong + ',' + lrlat + ',' + lrlong
            + '&size=' + width + ',' + height;
            console.log(URL);
            return URL; //this will be the src parameter in the showImage function
        }