$(function(){
    $("a[rel=external]").attr("target", "_blank");

    //$("#chat").scrollFollow({ offset:80 });

    var dirs = { ow:'overseas/', ps:'photo/',
      wn:'news/', qa:'faq/', au:'about/' };
    var hu = "http://www.watabe-wedding.com.hk/";
    var len = hu.length;
    var cu = window.location.href;
    var cd = cu.substring(len);
    if (cd == '' || cd == 'index.html') {
        $("#mm-hp").css('background-image',
                        'url("' + hu + 'img/main-menu.png")');
        $("#mm-hp").css('background-repeat', 'no-repeat');
        $("#mm-hp").css('background-position', '-130px -63px');
    } else {
        i = 1;
        for (var id in dirs) {
            dir = dirs[id];
            if (cd.indexOf(dir) == 0) {
                var left = -130 - (136 * i);
                $("#mm-" + id).css('background-image',
                                   'url("' + hu + 'img/main-menu.png")');
                $("#mm-" + id).css('background-repeat', 'no-repeat');
                $("#mm-" + id).css('background-position', left + 'px -63px');
            }
            i++;
        }
    }
});