sharer.js

define(function(){

  return function(params){

    return {

      init: function() {
        var that = this;
        $('a.share').on('click', function(e){
          e.preventDefault();
          that[ $(this).data('rede') ]();
        });
      },

      facebook: function (){
        url = "http://www.facebook.com/sharer.php";
        centerW = window.screenX + (window.innerWidth - 626) / 2;
        centerH = window.screenY + (window.innerHeight - 436) / 2;
        return window.open(url + "?u=" + params.shareURL + "&t=" + params.shareTitle, "_blank", "width=626, height=436, toolbar=0, status=0 top="
          + centerH + ", left=" + centerW + ", screenX=" + centerW + ", screenY=" + centerH);
      },

      twitter: function (){
        url = "http://twitter.com/share";
        centerW = window.screenX + (window.innerWidth - 540) / 2;
        centerH = window.screenY + (window.innerHeight - 380) / 2;
        return window.open(url + "?url=" + params.shareURL + "&text=" + params.ShareDescription, "_blank", "width=540, height=380, toolbar=0, status=0 top="
          + centerH + ", left=" + centerW + ", screenX=" + centerW + ", screenY=" + centerH);
      },

      pinterest: function (){
        url = "http://pinterest.com/pin/create/button/";
        centerW = window.screenX + (window.innerWidth - 540) / 2;
        centerH = window.screenY + (window.innerHeight - 380) / 2;
        return window.open(url + "?url=" + params.shareURL + "&media= " + params.ShareMedia + "&description=" + params.ShareDescription, "_blank", "width=540, height=380, toolbar=0, status=0 top="
          + centerH + ", left=" + centerW + ", screenX=" + centerW + ", screenY=" + centerH);
      },

      orkut: function (){
        url = "http://promote.orkut.com/preview?";
        params = "";
        centerW = window.screenX + (window.innerWidth - 540) / 2;
        centerH = window.screenY + (window.innerHeight - 380) / 2;

        qs = {
              src: 'bkmrklt',
              v: 1,
              nt: "orkut.com",
              du: escape(params.shareURL),
              tt: escape(params.shareTitle),
              rdrinl: 1
            };
          for (p in qs) {
            params += p + "=" + qs[p] + "&";
          }

        return window.open(url + "?" + params, "_blank", "width=640, height=510, toolbar=0, status=0 top="
          + centerH + ", left=" + centerW + ", screenX=" + centerW + ", screenY=" + centerH);
      }
    }
  }
});