var xmlHttp

function loadHeader(state)
{
   xmlHttp=GetXmlHttpObject()
    if (xmlHttp==null)
    {
     alert ("Browser does not support HTTP Request")
     return
    }
    var url="head?state="+state;

    xmlHttp.onreadystatechange=getDataHeader;
    xmlHttp.open("GET",url,true)
    xmlHttp.send(null)

    return
}

function getDataHeader()
{
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
    {
      document.getElementById("entete").innerHTML=xmlHttp.responseText
    }
}

function GetXmlHttpObject()
{
  var objXMLHttp=null
    if (window.XMLHttpRequest)
    {
      objXMLHttp=new XMLHttpRequest()
    }
    else if (window.ActiveXObject)
    {
      objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
    }
  return objXMLHttp
}

/* Simple AJAX Code-Kit (SACK) */
/* ©2005 Gregory Wild-Smith */
/* www.twilightuniverse.com */
/* Software licenced under a modified X11 licence, see documentation or authors website for more details */

function sack(file){
    this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
    this.requestFile = file;
    this.method = "POST";
    this.URLString = "";
    this.encodeURIString = true;
    this.execute = false;
    
    this.onLoading = function() { };
    this.onLoaded = function() { };
    this.onInteractive = function() { };
    this.onCompletion = function() { };
    
    this.createAJAX = function() {
	try {
	    this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
	} catch (e) {
	    try {
		this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	    } catch (err) {
		this.xmlhttp = null;
	    }
	}
	if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
	    this.xmlhttp = new XMLHttpRequest();
	if (!this.xmlhttp){
	    this.failed = true; 
	}
    };
    
    this.setVar = function(name, value){
	if (this.URLString.length < 3){
	    this.URLString = name + "=" + value;
	} else {
	    this.URLString += "&" + name + "=" + value;
	}
    }
    
    this.encVar = function(name, value){
	var varString = encodeURIComponent(name) + "=" + encodeURIComponent(value);
	return varString;
    }
    
    this.encodeURLString = function(string){
	varArray = string.split('&');
	for (i = 0; i < varArray.length; i++){
	    urlVars = varArray[i].split('=');
	    if (urlVars[0].indexOf('amp;') != -1){
		urlVars[0] = urlVars[0].substring(4);
	    }
	    varArray[i] = this.encVar(urlVars[0],urlVars[1]);
	}
	return varArray.join('&');
    }
    
    this.runResponse = function(){
	eval(this.response);
    }
    
    this.runAJAX = function(urlstring){
	this.responseStatus = new Array(2);
	if(this.failed && this.AjaxFailedAlert){ 
	    alert(this.AjaxFailedAlert); 
	} else {
	    if (urlstring){ 
		if (this.URLString.length){
		    this.URLString = this.URLString + "&" + urlstring; 
		} else {
		    this.URLString = urlstring; 
		}
	    }
	    if (this.encodeURIString){
		var timeval = new Date().getTime(); 
		this.URLString = this.encodeURLString(this.URLString);
		this.setVar("rndval", timeval);
	    }
	    if (this.element) { this.elementObj = document.getElementById(this.element); }
	    if (this.xmlhttp) {
		var self = this;
		if (this.method == "GET") {
		    var totalurlstring = this.requestFile + "?" + this.URLString;
		    this.xmlhttp.open(this.method, totalurlstring, true);
		} else {
		    this.xmlhttp.open(this.method, this.requestFile, true);
		}
		if (this.method == "POST"){
  		    try {
			this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  
		    } catch (e) {}
		}
		
		this.xmlhttp.send(this.URLString);
		this.xmlhttp.onreadystatechange = function() {
		    switch (self.xmlhttp.readyState){
		    case 1:
			self.onLoading();
			break;
		    case 2:
			self.onLoaded();
			break;
		    case 3:
			self.onInteractive();
			break;
		    case 4:
			self.response = self.xmlhttp.responseText;
			self.responseXML = self.xmlhttp.responseXML;
			self.responseStatus[0] = self.xmlhttp.status;
			self.responseStatus[1] = self.xmlhttp.statusText;
			self.onCompletion();
			if(self.execute){ self.runResponse(); }
			if (self.elementObj) {
			    var elemNodeName = self.elementObj.nodeName;
			    elemNodeName.toLowerCase();
			    if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
				self.elementObj.value = self.response;
			    } else {
				self.elementObj.innerHTML = self.response;
			    }
			}
			self.URLString = "";
			break;
		    }
		};
	    }
	}
    };
    this.createAJAX();
}

function displayRSS(uid, id)
{
    var items ;
    var el = document.getElementById(id) ;
    el.innerHTML = '<center><img src="./img/load.gif"/></center>' ;
    
    var ajax = new sack() ;
    ajax.requestFile = 'twitter.php?uid=' + uid ;
    ajax.onCompletion = function () {
	var items = ajax.response ;
	el.innerHTML = items ;
    }
    ajax.runAJAX() ;

}