function createRequestObject(){
      var request_;
      var browser = navigator.appName;
      if(browser == "Microsoft Internet Explorer"){
        request_ = new ActiveXObject("Microsoft.XMLHTTP");
        }
        else
        {
        request_ = new XMLHttpRequest();
        }
        return request_;
       }
      var httpCenter = createRequestObject();
      var httpRight  = createRequestObject();

function getCookie(name) {
        var prefix = name + "="
        var cookieStartIndex = document.cookie.indexOf(prefix)
        if (cookieStartIndex == -1)
                return null
        var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length)
        if (cookieEndIndex == -1)
                cookieEndIndex = document.cookie.length
        return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex))
}