function retour() {
window.history.back();
}

function visibilite(thingId)
{
var targetElement;
targetElement = document.getElementById(thingId) ;
if (targetElement.style.display == "")
{
targetElement.style.display = "none" ;
} 
else {
targetElement.style.display = "" ;
}
}

var cheminImage = "image/monimage.gif"; //image
var lienpopup = "http://www.jejavascript.net/";
monImage = new Image;
monImage.src = cheminImage;
var taillebg = monImage.width //largeur popup
var position_x = (screen.width-monImage.width)/2 //(largeur ecran - largeur image)/2
var position_y = (screen.height-monImage.height-10)/2 //(hauteur ecran - hauteur image)/2
function ouvrir_menu()
{
document.getElementById("menu_context").style.top = position_y;
document.getElementById("menu_context").style.left = position_x;
document.getElementById("menu_context").style.visibility = "visible";
deactiv_pop = setTimeout("fermer_menu()",30000)
}
function fermer_menu()
{
document.getElementById("menu_context").style.visibility = "hidden";
activ_pop = setTimeout("ouvrir_menu()",30000)
}
window.onload = ouvrir_menu;



function over(key)
{	
	var style = document.getElementById(key).style.display;
	
	if(style == 'block')
	{
		document.getElementById(key).style.display='none';
	}
	else
	{
		document.getElementById(key).style.display='block';
	}
}


function setCharCounter (a, b, n) {
	var o = document.getElementById(a);
	o.charCounterMax
	= n;
	o.charCounterDisplay = b;
	o.onkeyup = charCounterUpdate;
}
function charCounterUpdate () {
	var n = this.value.length;
	if (n > this.charCounterMax)
	{ 
		alert("Vous ne pouvez pas dépasser " + this.charCounterMax + " caractères pour cette zone.");
		return false;
	}
	if (this.charCounterDisplay)
	{
		var o = document.getElementById(this.charCounterDisplay);
		if (o.tagName.toLowerCase()=="input") o.value = n;
		else o.innerHTML = n;
	}

}

function popinfo(mypage,myname,w,h,scroll)
{
var LeftPosition = (screen.width-w)/2;
var TopPosition = (screen.height-h)/2;
var settings = 'height='+h+',width='+w+',top='+TopPosition+',left='+LeftPosition+', scrollbars=yes,resizable=no' 
window.open(mypage,myname,settings) 
} 

var isMozilla = (navigator.userAgent.toLowerCase().indexOf('gecko')!=-1) ? true : false;
var regexp = new RegExp("[\r]","gi");

function storeCaret(selec)
{
	if (isMozilla) 
	{
	// Si on est sur Mozilla

		oField = document.forms['formulaire'].elements['texte'];

		objectValue = oField.value;

		deb = oField.selectionStart;
		fin = oField.selectionEnd;

		objectValueDeb = objectValue.substring( 0 , oField.selectionStart );
		objectValueFin = objectValue.substring( oField.selectionEnd , oField.textLength );
		objectSelected = objectValue.substring( oField.selectionStart ,oField.selectionEnd );

	//	alert("Debut:'"+objectValueDeb+"' ("+deb+")\nFin:'"+objectValueFin+"' ("+fin+")\n\nSelectionné:'"+objectSelected+"'("+(fin-deb)+")");
			
		oField.value = objectValueDeb + "[" + selec + "]" + objectSelected + "[/" + selec + "]" + objectValueFin;
		oField.selectionStart = strlen(objectValueDeb);
		oField.selectionEnd = strlen(objectValueDeb + "[" + selec + "]" + objectSelected + "[/" + selec + "]");
		oField.focus();
		oField.setSelectionRange(
			objectValueDeb.length + selec.length + 2,
			objectValueDeb.length + selec.length + 2);
	}
	else
	{
	// Si on est sur IE
		
		oField = document.forms['formulaire'].elements['texte'];
		var str = document.selection.createRange().text;

		if (str.length>0)
		{
		// Si on a selectionné du texte
			var sel = document.selection.createRange();
			sel.text = "[" + selec + "]" + str + "[/" + selec + "]";
			sel.collapse();
			sel.select();
		}
		else
		{
			oField.focus(oField.caretPos);
		//	alert(oField.caretPos+"\n"+oField.value.length+"\n")
			oField.focus(oField.value.length);
			oField.caretPos = document.selection.createRange().duplicate();
			
			var bidon = "%~%";
			var orig = oField.value;
			oField.caretPos.text = bidon;
			var i = oField.value.search(bidon);
			oField.value = orig.substr(0,i) + "[" + selec + "][/" + selec + "]" + orig.substr(i, oField.value.length);
			var r = 0;
			for(n = 0; n < i; n++)
			{if(regexp.test(oField.value.substr(n,2)) == true){r++;}};
			pos = i + 2 + selec.length - r;
			//placer(document.forms['news'].elements['newst'], pos);
			var r = oField.createTextRange();
			r.moveStart('character', pos);
			r.collapse();
			r.select();

		}
	}
}

// afficher / cacher

function afficheId(baliseId)
  {
  if (document.getElementById && document.getElementById(baliseId) != null)
    {
    document.getElementById(baliseId).style.visibility='visible';
    document.getElementById(baliseId).style.display='block';
    }
  }

function cacheId(baliseId)
  {
  if (document.getElementById && document.getElementById(baliseId) != null)
    {
    document.getElementById(baliseId).style.visibility='hidden';
    document.getElementById(baliseId).style.display='none';
    }
  }

cacheId('contenu');
// si JavaScript est disponible, cache le contenu dès le
// chargement de la page. Sans JavaScript, le contenu sera
// affiché.