function openfenetre(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;
	} else
		if (pos == "center") {
			LeftPosition = (screen.width)?(screen.width-w)/2:100;
			TopPosition = (screen.height)?(screen.height-h)/2:100;
		} else {
			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);
}