// Gestion des layers tous navigateurs
    function affObject(ID) {
       if (document.getElementById) {
		    var visibleVar="visible";
		    return eval('document.getElementById("'+ID+'").style.visibility = "'+ visibleVar +'"');
       }
       if (document.layers) {
		    var visibleVar="show";
		    return eval('document.'+ID+'.visibility = '+ visibleVar);
       }
       if (document.all) {
		    var visibleVar="visible";
		    return eval('document.all.'+ID+'.style.visibility = '+ visibleVar);
       }
    }

    function masqueObject(ID) {
       if (document.getElementById) {
		    var visibleVar="hidden";
		    return eval('document.getElementById("'+ID+'").style.visibility = "'+ visibleVar +'"');
       }
       if (document.layers) {
		    var visibleVar="hidden";
		    return eval('document.'+ID+'.visibility = '+ visibleVar);
       }
       if (document.all) {
		    var visibleVar="hidden";
		    return eval('document.all.'+ID+'.style.visibility = '+ visibleVar);
       }
    }


function checkEnter(e, formulaire)
{ 
    var characterCode;

    if(e && e.which)
    {
        e = e;
        characterCode = e.which;
    }
    else
    {
        e = event;
        characterCode = e.keyCode;
    }

    if(characterCode == 13)
    {
        formulaire.submit();
        return false;
    }
    else
    {
        return true;
    }
}

function PostAjax(url, champs, aRemplir, aExecuter)
{
    var xhr_object = null;
    if(window.XMLHttpRequest) xhr_object = new XMLHttpRequest(); 
    else if(window.ActiveXObject) xhr_object = new ActiveXObject("Microsoft.XMLHTTP");

    xhr_object.onreadystatechange = function() {
        if (xhr_object.readyState == 4) {
            if (xhr_object.status == 200) {
                aRemplir.innerHTML = xhr_object.responseText;
                if (aExecuter != '')
                    eval(aExecuter);
            }
            else
                alert(xhr_object.responseText);
        }
    }
	
    xhr_object.open("POST", url, true);
    xhr_object.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=UTF-8');
    xhr_object.send(champs);
}

function ouvreFenetreCentree(url, nom, hauteur, largeur, options) 
{
    var iMyWidth;
    var iMyHeight;
    iMyWidth = (window.screen.width/2) - ((largeur/2) + 10);
    iMyHeight = (window.screen.height/2) - ((hauteur/2) + 10);
    if (options == '')
        options = "left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight;
    else
        options = options + ",left=" + iMyWidth + ",top=" + iMyHeight + ",screenX=" + iMyWidth + ",screenY=" + iMyHeight;
    var win = window.open(url,nom,options);
    win.focus();
}

function getValue(select)
{
	return select[select.selectedIndex].value;
}