Share link on facebook from Safari

I have a page made in Wordpress that has some links to share certain content on Twitter or Facebook. The problem is that the Twitter share button works well for me in all cases, but the Facebook one does not work in Safari (probe on Iphone and Ipad)

The twitter button code is:

    $('a.twitter').on('click', function(){
    openSocialPopup('http://www.twitter.com/intent/tweet?url=' + siteUrl);
});

And the facebook:

    $('a.facebook').on('click', function(){
    refreshFacebookScrapper(siteUrl);
    }); 

None have any qualifications for explorers. Should I add something? thanks!