var net=new Object();
insert = false;

net.READY_STATE_UNINITIALIZED=0;
net.READY_STATE_LOADING=1;
net.READY_STATE_LOADED=2;
net.READY_STATE_INTERACTIVE=3;

net.READY_STATE_COMPLETE=4;


/*--- content loader object for cross-browser requests ---*/
net.ContentLoader=function(url,onload,onerror,method,params,contentType){
  this.req=null;
  this.onload=onload;

  this.onerror=(onerror) ? onerror : this.defaultError;
  this.loadXMLDoc(url,method,params,contentType);
}

net.ContentLoader.prototype={
 loadXMLDoc:function(url,method,params,contentType){
  if (!method){

    method="GET";
  }
  if (!contentType && method=="POST"){
    contentType='application/x-www-form-urlencoded';
  }
  if (window.XMLHttpRequest){
    this.req=new XMLHttpRequest();

  } else if (window.ActiveXObject){
    this.req=new ActiveXObject("Microsoft.XMLHTTP");
  }
  if (this.req){
    try{
      var loader=this;
      this.req.onreadystatechange=function(){

        loader.onReadyState.call(loader);
      }
      this.req.open(method,url,true);
      if (contentType){
        this.req.setRequestHeader('Content-Type', contentType);
      }
      this.req.send
(params);
    }catch (err){
      this.onerror.call(this);
    }
  }
 },

 onReadyState:function(){
  var req=this.req;
  var ready=req.readyState;
  if (ready==net.READY_STATE_COMPLETE){

	   var httpStatus=req.status;
    if (httpStatus==200 || httpStatus==0){
      this.onload.call(this);
    }else{
      this.onerror.call(this);
    }
  }
 },

 defaultError:function(){
  alert("error fetching data!"

    +"\n\nreadyState:"+this.req.readyState
    +"\nstatus: "+this.req.status
    +"\nheaders: "+this.req.getAllResponseHeaders());
 }
} 

function addToWishlist(id, sessionid) {
    if(insert==false) {
    url = "components/com_wishlist/query.php?id="+id+"&sessionid="+sessionid;
    news= new net.ContentLoader(url,addItem,null,"GET",null,null);	
    insert=true; }
     }

function addItem() {
	var e = document.getElementById("wishlist");
	e.innerHTML = e.innerHTML + (this.req.responseText); }