function ajax(fichier,img)
{
    var xhr=null;

    if (window.XMLHttpRequest) { 
        xhr = new XMLHttpRequest();
    }
    else if (window.ActiveXObject) 
    {
        xhr = new ActiveXObject("Microsoft.XMLHTTP");
    }
    //on définit l'appel de la fonction au retour serveur
    xhr.onreadystatechange = function() { alert_ajax(xhr,img); };

    //on appelle le fichier reponse.txt
    xhr.open("GET", "/"+fichier+".php", true);
    xhr.send(null);
}

function alert_ajax(xhr,img)
{
		document.getElementById('content').innerHTML="<div class='load_text'><img src='images/loader1.gif' width='61' height='41' /></div>";
			if(xhr.readyState == 4)
			{
				if(xhr.status == 200)
					{
					document.getElementById('content').innerHTML = xhr.responseText;
					document.getElementById('cell').innerHTML = "<img src='images/"+img+"' alt='Phoenix' width='250' height='100' />";
					//Image zoom effet
						var box = {};
						window.addEvent('domready', function(){
						box = new MultiBox('diagramme', {descClassName: 'multiBoxDesc', useOverlay: true});
					});
				}	
				else	
				{
document.getElementById('content').innerHTML = "<p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p align='center'><font color=red><b>/!\\</b></font> Erreur : " + xhr.status + " " + xhr.statusText + "</p>";
				}	
			}
}
//------------------------------------------------------------//
function ajax_contact(NAME, POSTE, TEL, EMAIL, COMPAGNIE, SECTEUR, VILLE) 
{ 
	if ((NAME != '') && (EMAIL != '')) {
		
		var xhr=null;
			if (window.XMLHttpRequest) {
				xhr = new XMLHttpRequest();
			}
			else if (window.ActiveXObject){
				xhr = new ActiveXObject("Microsoft.XMLHTTP");
			}
			
			xhr.open('POST',"ok_form_php.php",true);
			
			xhr.onreadystatechange = function()
			{
				document.getElementById('msg').innerHTML="<div align='center' width='300px'><br>Envois en cours ...</div>";
				if (xhr.readyState == 4)
				{
					if (xhr.status==200)
					{
						document.getElementById('msg').innerHTML= xhr.responseText;
					}else{
						document.getElementById('msg').innerHTML = "<p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p>&nbsp;</p><p align='center'><font color=red><b>/!\\</b></font> Erreur : " + xhr.status + " " + xhr.statusText + "</p>";
					}
				}
			}
			xhr.setRequestHeader('Content-type','application/x-www-form-urlencoded');
			xhr.send('NAME='+NAME+'&POSTE='+POSTE+'&TEL='+TEL+'&EMAIL='+EMAIL+'&COMPAGNIE='+COMPAGNIE+'&SECTEUR='+SECTEUR);
	}else{
	document.getElementById('msg_erreur').innerHTML="<div id=\"msg_erreur_info\">Pri&egrave;re de compl&eacute;ter le formulaire</div>";
	if (NAME == '') document.getElementById('NAME').className = "field_miss";
	if (EMAIL == '') document.getElementById('EMAIL').className = "field_miss";
	}
}