function getXPopup(width){

	var x = ( screen.width - width ) / 2
	return x
}
function getYPopup(height){
	var y =( screen.height - height ) / 2.3
	
	return y
}
function showMenu( id ){
	document.getElementById(id).style.visibility = 'visible'		
}
function hideMenu( id ){
	document.getElementById(id).style.visibility = 'hidden'
}

function displaycalendar(){
	document.write('<IFRAME src="http://www.fennec-concept.ch/calendrier/yearcal.php?op=yearcal" frameBorder=0 width=658 scrolling=no height=760></IFRAME>');
}

function displayformular(){
	document.write('<br><IFRAME src="http://www.fennec-concept.ch/formulaire/formulaire.php" frameBorder=0 width=658 scrolling=no height=300></IFRAME>');
}