Popup JS

popup.js

jQuery(function($) {
  // Scroll the popup with the user
  $(window).scroll(function() {
    var windowWidth = document.documentElement.clientWidth;
    var windowHeight = document.documentElement.clientHeight;

    var popupWidth = $("#likeus").width();
    var popupHeight = $("#likeus").height();
    var topPopup = windowHeight * 2 / 3 + $(window).scrollTop();
    var leftPopup = windowWidth - popupWidth;

    // Did they say permanently
    if (!$.cookie('likeus-popup')){
      if (($('#likeus').css('display') == 'none') && ($('body').height() / 2 + popupHeight) <= ($(window).height() + $(window).scrollTop()+popupHeight*2)) {
       $('#likeus').animate({top:topPopup, left:leftPopup},60);
       $('#likeus').slideDown();
      }
      else if ($('#likeus').css('display') != 'none') {
       $('#likeus').animate({top:topPopup, left:leftPopup},60);
      }
    }
  });

  // Regular close button clicked
  $("a.close-like").click(function(){
    $('#likeus').slideUp();
    $('#likeus').attr("id", "likeus-hide");
    return false;
  });

  // They already like us so close it permanently
  $("a.close-forever").click(function() {
    $('#likeus').slideUp();
    $('#likeus').attr("id", "likeus-hide");
    var date = new Date();
    date.setDate(date.getDate() + 20*365);
    $.cookie('likeus-popup', true, { expires: date });
    return false;
  });
});