function popupprog(url){
	var t,l,h,w,win,config
		nome = "popupprog";
		h = 440;
		w = 440;
		t = (window.screen.height-h)/2;
		l = (window.screen.width-w)/2;
	
	config = "menubar=0, toolbar=0, resizable=no, scrollbars=yes, status=0, location=0, width=" + w + ", height=" + h + ", top=" + t + ", left=" + l;
	window.open(url, nome, config);
}