function carregarOpcao(link_url, id_elemento)
	{
        	var objXMLHttpRequest = false;
        	
        	if (window.XMLHttpRequest) {
        	
        		objXMLHttpRequest = new XMLHttpRequest();
        	} else if (window.ActiveXObject) {
        	
        		objXMLHttpRequest = new ActiveXObject("Microsoft.XMLHTTP");
        	}
		if (objXMLHttpRequest) {
			var obj = document.getElementById(id_elemento);
			objXMLHttpRequest.open("GET", link_url);			
			objXMLHttpRequest.onreadystatechange = 
			        function()
				{
				  if (objXMLHttpRequest.readyState == 4 && objXMLHttpRequest.status == 200) 
				  {
					obj.innerHTML = objXMLHttpRequest.responseText;
					
				  }
			}
		objXMLHttpRequest.send(null);
		}
	}
	
	
//funções para comentar
 
   var http_request = false;
   function makePOSTRequest(url, parameters) {
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/html; charset=iso-8859-1');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }
 
   function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById('comentarios1-form').innerHTML = result;            
         } else {
            alert('Não foi possível enviar os dados para o servidor. Tente novamente!');
         }
      }
   }
   
//Função que junta info de dois campos textarea e exibe através da página post.php
   function get(obj) {
      var poststr = "nome=" + encodeURI( document.getElementById("nome").value ) +
                    "&email=" + encodeURI( document.getElementById("email").value ) +
                    "&id_trailer=" + encodeURI( document.getElementById("id_trailer").value ) +
                    "&mensagem=" + encodeURI( document.getElementById("mensagem").value );
      makePOSTRequest('/scr/comentarfilme-post.php', poststr);
   }