Facebook/twitter sharing popup functions

socialSharing.js

/*  // USAGE
    
    tweetIntent({
      url: window.location.href,
      text: "Some message"
      related: "OptionalAdvertisedTwitterUser" 
    })
    
    facebookShare({
      url: window.location.href,
      text: "Some message"
    })
*/

function tweetIntent(data) {
  var url = "https://twitter.com/intent/tweet/?"
    , options = {
      url: data.url,
      text: encodeURIComponent(data.text),
      related: data.related
    }
  popupGET(options,url);
}

function facebookShare(data) {
  var url = "https://www.facebook.com/sharer/sharer.php?"
    , options = {
      u: data.url,
      t: encodeURIComponent(data.text)
    }
  popupGET(options,url);
}

function popupGET(options,url) {
  for(var key in options){
    if (options.hasOwnProperty(key))
      url += "&"+key+"="+options[key]
  }
  var w = popupWindow("","_blank",400,400)
  w.location.href = url;
}

function popupWindow(url, title, w, h) {
  var left = (screen.width/2)-(w/2);
  var top = (screen.height/2)-(h/2);
  return window.open(url, title, 'toolbar=no, location=no, directories=no, status=no, menubar=no, scrollbars=no, resizable=no, width='+w+', height='+h+', top='+top+', left='+left);
}