// JavaScript Popup

function janela( file, winName, larg,  alt){
//features = 'directories=no,toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,copyhistory=no,resizable=no,width=' + larg + ',height='  + alt);
	features = 'scrollbars=yes,width=' + larg + ',height='  + alt;
	window_ = open(file,winName,features);
    window_.moveTo((screen.width-larg)/2,(screen.height-alt)/2-20);
}