wushan

server {
  listen 80 default_server;
  listen [::]:80 default_server;

  root /your/root/path;

  index index.html;

  server_name you.server.com;

wushan

// Inspired by http://stackoverflow.com/questions/5106243/how-do-i-get-background-image-size-in-jquery, a simple jquery plugin who does the task

$.fn.getBgImage = function(callback) {
    var height = 0;
    var path = $(this).css('background-image').replace('url', '').replace('(', '').replace(')', '').replace('"', '').replace('"', '');
    var tempImg = $('<img />');
    tempImg.hide(); //hide image
    tempImg.bind('load', callback);
    $('body').append(tempImg); // add to DOM before </body>
    tempImg.attr('src', path);