// Abre ventana
function MM_openBrWindow(theURL,winName,features) { 
		window.open(theURL,winName,features);
		}
		/* Se usa asi:
		En head:  <script language="JavaScript" src="abrevent.js"></script>
		En Body:  <a href="#" onClick="MM_openBrWindow('gratis.html','','width=600,height=400')">Formulario Adjunto </a>
		*/