try 
{
	ajax = new ActiveXObject("Microsoft.XMLHTTP");
} 
catch  (e)
{
	try 
	{
		ajax = new ActiveXObject("Msxml2.XMLHTTP");
	}
	catch(ex) 
	{
		try 
		{
			ajax = new XMLHttpRequest();
		}
		catch(exc) 
		{
			ajax = null;
		}
	}
}

var voto = "";

function post(nro) {

	var input = document.getElementsByTagName('input');
	var vot_nro = document.getElementById('vnro'+eval(nro)).value;	

	if (ajax) {
		if (nro != 0){
			var id = document.getElementById('id'+eval(nro)).value;
			var voto = document.getElementById('voto'+eval(nro)).value;
			ajax.open('post', 'http://www.terra.com/musica/unminutocon/poll_response_mas.php');
			var destino = 'rate'+eval(nro);
		} else {
			var id = document.getElementById('id').value;
			var voto = document.getElementById('voto').value;
			ajax.open('post', 'http://www.terra.com/musica/unminutocon/poll_response.php');
			var destino = 'votacion';
		}
		
			ajax.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
			ajax.onreadystatechange = function() {
				if(ajax.readyState == 4){
					var data = ajax.responseText;
					document.getElementById(destino).innerHTML = data;
				}		
			}; 
			ajax.send('voto='+voto+'&id='+id+'&vnro='+vot_nro);
		}			

}