// ------------------------------------------------------------------------------------------
// Initialisation d'ajax
// ------------------------------------------------------------------------------------------

var http_request = false;
  
// ------------------------------------------------------------------------------------------
// Formatage et envoi des données du formulaire à la page ajax.php
// ------------------------------------------------------------------------------------------
function makePostRequest(url, parameters) 
  {
    http_request = false;

    // Mozilla, Safari, ... 
    if (window.XMLHttpRequest) 
      { 
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) 
           { http_request.overrideMimeType('text/html');}
      } 
    // Internet Explorer  
    else if (window.ActiveXObject) 
      {
         try { http_request = new ActiveXObject("Msxml2.XMLHTTP"); } 
         catch (e) 
           {
            try { http_request = new ActiveXObject("Microsoft.XMLHTTP"); } 
            catch (e) {}
           }
      }
      
     // Erreur ajax
     if (!http_request) 
       {
         alert('Ajax error');
         return false;
       }
       
     // Envoi des données 
     http_request.onreadystatechange = alertContents; 

     http_request.open('POST', url + parameters, true);
     http_request.send(null);
  }

   
// ------------------------------------------------------------------------------------------
// Réponse ajax
// ------------------------------------------------------------------------------------------
function alertContents() 
	{

		if (http_request.readyState == 4) 
			{
				if (http_request.status == 200) 
					{  ;
						result = http_request.responseText;
						document.getElementById("ajax_log").innerHTML = result;  
        
					} 
				else { alert('There was a problem with the request.');}
			}
	 }

// ------------------------------------------------------------------------------------------
// Fonction ajax appelée depuis le formulaire
// ------------------------------------------------------------------------------------------
function ajax(obj) 
	{
		var getstr = "?";
		 
		 
		 
		// Récupération des valeurs du formulaire
		for (i=0; i<obj.getElementsByTagName("input").length; i++) 
			{
				// Champ texte
				if (obj.getElementsByTagName("input")[i].type == "text") 
					{ getstr += obj.getElementsByTagName("input")[i].name + "=" +  obj.getElementsByTagName("input")[i].value + "&";}

				// Champ password
				if (obj.getElementsByTagName("input")[i].type == "password") 
					{ getstr += obj.getElementsByTagName("input")[i].name + "=" +  obj.getElementsByTagName("input")[i].value + "&";}

		 
				// Champ caché
				if (obj.getElementsByTagName("input")[i].type == "hidden") { getstr += obj.getElementsByTagName("input")[i].name + "=" +  obj.getElementsByTagName("input")[i].value + "&"; }
			
				// Case à cocher
				if (obj.getElementsByTagName("input")[i].type == "checkbox") 
					{
						if (obj.getElementsByTagName("input")[i].checked) { getstr += obj.getElementsByTagName("input")[i].name + "=" +  obj.getElementsByTagName("input")[i].value + "&";} 
						else { getstr += obj.getElementsByTagName("input")[i].name + "=&"; }
					}
				
				// Bouton radio
				if (obj.getElementsByTagName("input")[i].type == "radio") 
					{
						if (obj.getElementsByTagName("input")[i].checked) { getstr += obj.getElementsByTagName("input")[i].name + "=" +  obj.getElementsByTagName("input")[i].value + "&";}
					} 
				
			 // Liste déroulate    
			 if (obj.getElementsByTagName("input")[i].tagName == "SELECT") 
				 {
					 var sel = obj.getElementsByTagName("input")[i];
					 getstr += sel.name + "=" + sel.options[sel.selectedIndex].value + "&"; 
				 }
		 } 
	 


	 // Envoi de la requête ajax  
	 makePostRequest('ajax.php', getstr);
 }

// ------------------------------------------------------------------------------------------
// Chargement d'une page
// ------------------------------------------------------------------------------------------
function ajaxLoadPage(page,usediv,width, height,color) 
  {
    // Style
    obj = document.getElementById(usediv);
    obj.style.width=width;
    obj.style.height=height;
    obj.style.display="block";
    obj.style.border="4px solid "+color;
    obj.style.zindex= "100";
    obj.style.position= "absolute";
    obj.style.margin = "0px auto";
    obj.style.top='150px';
    obj.style.overflow="hidden";
    obj.style.float="left";  
    obj.style.background=color; 
    obj.style.paddingtop="44px";

    close='<div style="text-align:right;;margin:0 auto;width:"+width"px;height:14px;background:'+color+';margin-top:0;border:2px solid '+color+'"><a href="#" style="color:white" id="'+usediv+'_close" onclick="ajaxClosePage(\''+usediv+'\')">Close</a></div>';
  
    try 
      {
        xmlhttp = window.XMLHttpRequest?new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");}  catch (e) { alert("Error: Could not load page.");}

         document.getElementById(usediv).innerHTML = '<img src=media/images/site/loadn_anim.gif> Loading Page...';
         scroll(0,0);
         xmlhttp.onreadystatechange = function()
           {
             if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) 
               { document.getElementById(usediv).innerHTML = close+xmlhttp.responseText; }
           }
         xmlhttp.open("GET", page);
         xmlhttp.send(null);
         return false;
  }
  
function ajaxClosePage(usediv)
  {
    // Style
    obj = document.getElementById(usediv);
    obj.style.display="none";  
  }  

// ------------------------------------------------------------------------------------------
// Chargement d'une image
// ------------------------------------------------------------------------------------------
  
function ajaxLoadImage(image,usediv) 
  {
    try 
      {
        xmlhttp = window.XMLHttpRequest?new XMLHttpRequest(): new ActiveXObject("Microsoft.XMLHTTP");}  catch (e) { alert("Error: Could not load page.");}

         document.getElementById(usediv).innerHTML = '<img src=media/images/site/loadn_anim.gif> Loading Image...';
         scroll(0,0);
         xmlhttp.onreadystatechange = function()
           {
             if ((xmlhttp.readyState == 4) && (xmlhttp.status == 200)) 
               { document.getElementById(usediv).innerHTML = "<img src='"+image+"' alt='' />"; }
           }
         xmlhttp.open("GET", image);
         xmlhttp.send(null);
         return false;
  }