function visualizar(alvo, tipo, link){
 	
 	if(link == null || link == ''){
		if(tipo == 6){
			top.location.href = 'http://www.camacarinoticias.com.br/leitura.php?id='+alvo;
		}
	} else {
			LeftPosition = (screen.width) ? (screen.width-800)/2 : 0;
			TopPosition = (screen.height) ? (screen.height-400)/2 : 0;

			settings ='height=400,width=800,top='+TopPosition+',left='+LeftPosition+',scrollbars=1,resizable=yes,status=yes,toolbar=1,location=1,statusbar=1,menubar=1';
			
			window.open(link,'LINK',settings);
	}
	
}