function MM_reloadPage(init) 
	{  //reloads the window if Nav4 resized
	  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
		document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
	  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
	}

function popupcentree(page,largeur,hauteur,options)
	{
		var top=(screen.height-hauteur)/2-30;
		var left=(screen.width-largeur)/2;
		window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);
	}