function createSearchAreaField() {

    var locationSelect = document.getElementsByName("location")[0];

    if (locationSelect) {

        var areas = [];

if (locationSelect.value == 1) {

areas[1] = "Central";
                        areas[2] = "River Front";
                        areas[3] = "West End";
                                        }
else if (locationSelect.value == 2) {

areas[1] = "Central";
                                        }
else if (locationSelect.value == 3) {

                }

        var td = document.getElementById("searchAreaField");

        if (areas.length > 0) {            

            while (td.hasChildNodes()) td.removeChild(td.childNodes[0]);

            td.appendChild(document.createTextNode("Area:"));
            td.appendChild(document.createElement("br"));

            var select = document.createElement("select");
            select.name = "area";

            for (var area in areas) {
                var option = document.createElement("option");
                option.value = area;
                option.appendChild(document.createTextNode(areas[area]));

                if (area == previouslySelectedArea)
                    option.selected = "selected";

                select.appendChild(option);
            }

            td.appendChild(select);
        }
        else while (td.hasChildNodes()) td.removeChild(td.childNodes[0]);
    }

}