function montar(id){
	
	var associativo = id;
	associativo = associativo.split('_');
	
	url = associativo[0]+".php";
	
	if(associativo[0] == 'professor')
		url += "?tipo="+associativo[1];

	Request.open("GET",url,true);
	
	Request.onreadystatechange = ChamarForm;
	
	tipo  = associativo[0]; 
	index = parseInt(associativo[1]); 
	
	Request.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
	Request.send(null);
}

function ChamarForm(){	
	if(Request.readyState == 1){
		getId("descricao").innerHTML = "<p class=\"alerta\">Carregando ...</p>";
	}
		
	if(Request.readyState == 4){
		if(Request.status == 200){
			getId("descricao").innerHTML = "";
			
			var resultado = Request.responseXML;
			
			if(tipo != 'professor'){
				var registro  = resultado.getElementsByTagName("registro").item(index);				
				for(i = 0; i < registro.childNodes.length; i++)
					if(registro.childNodes[i].nodeType == 1)
						getId("descricao").innerHTML += registro.childNodes[i].firstChild.nodeValue + "<br />";	
			}else{
				var registro  	= resultado.getElementsByTagName("registro");
				var nome 		= resultado.getElementsByTagName("nome");
				var disciplina  = resultado.getElementsByTagName("disciplina");
				for(i = 0; i < registro.length; i++){
						getId("descricao").innerHTML += nome[i].firstChild.nodeValue+ " ";
						getId("descricao").innerHTML += disciplina[i].firstChild.nodeValue + "<br />";
				}		
			}		
		}
	}
}