// JavaScript Document
function popup(page, w, h) {
	/* ouvre une fenetre sans barre d'etat, ni d'ascenceur
	w = 500;
	h	= 410;
	*/
	var top=(screen.height-h)/2;
	var left=(screen.width-w)/2;
	myPopup = window.open(page,'popup','top='+top+', left='+left+', width='+w+', height='+h+', scrollbars=yes');	
	myPopup.focus();
}
function swapimg(nav, id, bool) {
	//alert('hop');
	document.images[nav+id].src = (bool=='off') ? 'images/'+nav+id+'-off.gif':'images/'+nav+id+'-on.gif';
}