$(function(){
    $('.bt-mais').click(function() {
        var self = $(this);
        var button = self.next();
        var class_on = 'box-oferta acender';
        var class_off = 'box-oferta apagar';

        if (self.html() == '+')
        {
            self.html('-');
            button.removeClass(class_off).addClass(class_on);
        }
        else if (self.html() == '-')
        {
            self.html('+');
            button.removeClass(class_on).addClass(class_off);
        }

        return false;
    });

    var url_parts = window.location.href.split('#')
    if(url_parts.length > 1)
    {
        var offer_openned_id = url_parts[1]
        var context = $('#'+offer_openned_id);
        $('.bt-mais', context).click();
    }
});