function afficherBulle(id, x, y){
	document.getElementById(id).style.visibility = "visible";
	document.getElementById(id).style.left = x+"px";
	//document.getElementById(id).style.top = y;
	if(whichBrs() == 'Internet Explorer' ||whichBrs() == 'Opera' ){
		document.getElementById(id).style.top = y+"px";
		document.getElementById(id).style.display = "block";
	}
	else{
		var ya = y-8;
		document.getElementById(id).style.top = ya+"px";
		document.getElementById(id).style.display = "table-row";
	}
}
function cacherBulle(id){
	document.getElementById(id).style.visibility="hidden";
	document.getElementById(id).style.display="none";
}

function whichBrs() {
	var agt=navigator.userAgent.toLowerCase();
	if (agt.indexOf("opera") != -1) return 'Opera';
	if (agt.indexOf("staroffice") != -1) return 'Star Office';
	if (agt.indexOf("webtv") != -1) return 'WebTV';
	if (agt.indexOf("beonex") != -1) return 'Beonex';
	if (agt.indexOf("chimera") != -1) return 'Chimera';
	if (agt.indexOf("netpositive") != -1) return 'NetPositive';
	if (agt.indexOf("phoenix") != -1) return 'Phoenix';
	if (agt.indexOf("firefox") != -1) return 'Firefox';
	if (agt.indexOf("safari") != -1) return 'Safari';
	if (agt.indexOf("skipstone") != -1) return 'SkipStone';
	if (agt.indexOf("msie") != -1) return 'Internet Explorer';
	if (agt.indexOf("netscape") != -1) return 'Netscape';
	if (agt.indexOf("mozilla/5.0") != -1) return 'Mozilla';
	if (agt.indexOf('\/') != -1) {
		if (agt.substr(0,agt.indexOf('\/')) != 'mozilla') {
			return navigator.userAgent.substr(0,agt.indexOf('\/'));}
		else return 'Netscape';} else if (agt.indexOf(' ') != -1)
			return navigator.userAgent.substr(0,agt.indexOf(' '));
		else return navigator.userAgent;
}