function precharger()
{
	i1 = new Image;
	i1.src = "images/gb_about_on.jpg";
	i2 = new Image;
	i2.src = "images/gb_members_on.jpg";
	i3 = new Image;
	i3.src = "images/gb_news_on.jpg";
	i4 = new Image;
	i4.src = "images/gb_partners_on.jpg";
	i5 = new Image;
	i5.src = "images/gb_contact_on.jpg";
}

function montre_calque(nom_calque)
{
	if(document.all){eval('document.all.'+nom_calque).style.visibility='visible';}                     //Internet Explorer
	else if (document.layers){eval('document.'+nom_calque).visibility='show';}                         //Netscape 4.5 et 4.7
	else if (document.getElementById){document.getElementById(nom_calque).style.visibility='visible';} //Netscape 6
}

function cache_calque(nom_calque)
{
	if(document.all){eval('document.all.'+nom_calque).style.visibility='hidden';}                     //Internet Explorer
	else if (document.layers){eval('document.'+nom_calque).visibility='hidden';}                      //Netscape 4.5 et 4.7
	else if (document.getElementById){document.getElementById(nom_calque).style.visibility='hidden';} //Netscape 6
}

//Ouverture d'une pop up
function ouvreFenetre(mypage,myname,w,h,scroll,pos){
if(pos=="random"){LeftPosition=(screen.width)?Math.floor(Math.random()*(screen.width-w)):100;TopPosition=(screen.height)?Math.floor(Math.random()*((screen.height-h)-75)):100;}
if(pos=="center"){LeftPosition=(screen.width)?(screen.width-w)/2:100;TopPosition=(screen.height)?(screen.height-h)/2:100;}
else if((pos!="center" && pos!="random") || pos==null){LeftPosition=0;TopPosition=20}
settings='width='+w+',height='+h+',top='+TopPosition+',left='+LeftPosition+',scrollbars='+scroll+',location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no';
win=window.open(mypage,myname,settings);}

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

function insertCode(selec,FormName,InputName)
{
	oField = document.forms[FormName].elements[InputName];
	if (isMozilla) 
	{
		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 );	
		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
		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();
		}
	}
}

function verifierActu(formulaire)
{
	if(formulaire.AC_titre.value == "") msg = "Veuillez fournir un titre SVP\n"; else msg="";
	if(formulaire.AC_resume.value == "") msg += "Veuillez fournir un résumé SVP\n"; else msg="";
	if(msg !="") 
	{
		alert(msg);
		msg = "";
	}
	else 
	{
		if(formulaire.AC_img.value != "") ouvreFenetre('attente.php','attente','220','100','no','center');
		formulaire.submit();
	}
}

function supprimerErreurs() {
    return true;
}

window.onerror = supprimerErreurs;

function confirmation(URL,MSG)
{
	if(confirm(MSG))
	{
		document.location.href=URL;
	}
}