Extends Ajax to strictly use Yahoo Query Language for CROSS-DOMAIN Ajax.

cross-domain-ajax.js

$.ajax = (function (ajax) {
  return function (o) {
    o.dataType = 'json'
    o.data = {
      q: 'select * from html where url="' + (o.url + (o.data ? (/\?/.test(o.url) ? '&' : '?') + $.param(o.data) : '') + '" and xpath="*"'),
      format: 'xml'
    }
    o.url = 'http' + (/^https/.test(location.protocol) ? 's' : '') + '://query.yahooapis.com/v1/public/yql?callback=?'
    o.success = (function (success) {
      return function (data) {
        if (success) {
          success.call(this, data.results[0] || '', 'success')
        }
      }
    })(o.success)
    return ajax.apply(this, arguments)
  }
})($.ajax)

• Credits, http://james.padolsey.com/javascript/cross-domain-requests-with-jquery/