function popup(url, type, height, width,full){
	var top=(screen.height-height)/2;
	var left=(screen.width-width)/2;
	var nsNav = (document.layers) ? 1 : 0;
	var ieNav = (document.all) ? 1 : 0;
	
	// popup plein ecran
	if(full)
	{
		height = screen.availHeight - 30;
		width = screen.availWidth - 10;
		top=0;
		left=0;
	}
  
	wintype="toolbar="+type+",menubar="+type+",location='no',scrollbars="+type+",top="+top+",left="+left;
	wintype=wintype + ",height=" + height + ",width=" + width;
	var newwin = window.open(url,"popup"+type,wintype);
	newwin.focus();
}