/* 
 * Change area image onmouseover on index page 
 */
function highlight_map (province, value) {
        var ProvinceName = document.getElementById("area_" + province);
        var HighlightProvince = document.getElementById("area_highlight");
        if (!value) {
                ProvinceName.style.textDecoration = "underline";
                HighlightProvince.style.backgroundPosition = -500 * province + 'px 0px';
        } else {
                ProvinceName.style.textDecoration = "none";
                HighlightProvince.style.backgroundPosition = "0px 0px";
        }
        return true;
}