function ouvrirPopup(url, w, h){
	var x = (screen.width-w)/2;
	var y = (screen.height-h)/2;
	var popup = window.open(url, '', 'toolbar=0, location=0, directories=0, menuBar=0, scrollbars=1, resizable=1, width='+w+', height='+h+', left='+x+', top='+y+', screenX='+x+', screenY='+y);
	return false;
}
function ouvrirPopup2(url, w, h){
	var x = (screen.width-w)/2;
	var y = (screen.height-h)/2;
	var popup = window.open(url, '', 'toolbar=0, location=0, directories=0, menuBar=0, scrollbars=0, resizable=0, width='+w+', height='+h+', left='+x+', top='+y+', screenX='+x+', screenY='+y);
	return false;
}