function abrir_pop(pop,estilo){
				var ventana=window.open(pop,"",estilo);
				}


function muestra(imageobject,opacity){
	
	if (navigator.appName.indexOf("Netscape")!=-1&&parseInt(navigator.appVersion)>=5)
		imageobject.style.MozOpacity=opacity/100
	else if (navigator.appName.indexOf("Microsoft")!=-1&&parseInt(navigator.appVersion)>=4)
		imageobject.filters.alpha.opacity=opacity
}