//V3.00.A - http://www.openjs.com/scripts/jx/
jx = {
  http:false, //HTTP Object
  format:'text',
  callback:function(data){},
  error:false,
  //Create a xmlHttpRequest object - this is the constructor. 
  getHTTPObject : function() {
    var http = false;
    //Use IE's ActiveX items to load the file.
    if(typeof ActiveXObject != 'undefined') {
      try {http = new ActiveXObject("Msxml2.XMLHTTP");}
      catch (e) {
        try {http = new ActiveXObject("Microsoft.XMLHTTP");}
        catch (E) {http = false;}
      }
    //If ActiveX is not available, use the XMLHttpRequest of Firefox/Mozilla etc. to load the document.
    } else if (XMLHttpRequest) {
      try {http = new XMLHttpRequest();}
      catch (e) {http = false;}
    }
    return http;
  },
  // This function is called from the user's script. 
  //Arguments - 
  //  url - The url of the serverside script that is to be called. Append all the arguments to 
  //      this url - eg. 'get_data.php?id=5&car=benz'
  //  callback - Function that must be called once the data is ready.
  //  format - The return type for this function. Could be 'xml','json' or 'text'. If it is json, 
  //      the string will be 'eval'ed before returning it. Default:'text'
  load : function (url,callback,format) {
    this.init(); //The XMLHttpRequest object is recreated at every call - to defeat Cache problem in IE
    if(!this.http||!url) return;
    if (this.http.overrideMimeType) this.http.overrideMimeType('text/xml');

    this.callback=callback;
    if(!format) var format = "text";//Default return type is 'text'
    this.format = format.toLowerCase();
    var ths = this;//Closure
    
    if (this.http.overrideMimeType) this.http.overrideMimeType('text/xml');

    //Kill the Cache problem in IE.
    var now = "uid=" + new Date().getTime();
    url += (url.indexOf("?")+1) ? "&" : "?";
    url += now;

    this.http.open("GET", url, true);

    this.http.onreadystatechange = function () {//Call a function when the state changes.
      if(!ths) return;
      var http = ths.http;
      if (http.readyState == 4) {//Ready State will be 4 when the document is loaded.
        if(http.status == 200) {
          var result = "";
          if(http.responseText) result = http.responseText;
          //If the return is in JSON format, eval the result before returning it.
          if(ths.format.charAt(0) == "j") {
            //\n's in JSON string, when evaluated will create errors in IE
            result = result.replace(/[\n\r]/g,"");
            result = eval('('+result+')'); 
          }
  
          //Give the data to the callback function.
          if(ths.callback) ths.callback(result);
        } else { //An error occured
          if(ths.error) ths.error()
        }
      }
    }
    this.http.send(null);
  },
  init : function() {this.http = this.getHTTPObject();}
}