function crearObjetoPedido() {
    var ro;
    var browser = navigator.appName;
    if(browser == "Microsoft Internet Explorer"){
        ro = new ActiveXObject("Microsoft.XMLHTTP");
    }else{
        ro = new XMLHttpRequest();
    }
    return ro;
}

function enviarConsulta(action,valor,divid) {
	var http = crearObjetoPedido();
	http.open('get', '/includes/combos.php?action=' + action + '&valor=' + valor + '&divid=' + divid);
    http.onreadystatechange = function(){
		if(http.readyState == 4){
			var response = http.responseText;
			document.getElementById(divid).innerHTML = response;
		}
    };
    http.send(null);
}

function consultaSitio(action,valor) {
	var http = crearObjetoPedido();
	http.open('get', '/includes/combos.php?action=' + action + '&valor=' + valor);
    http.onreadystatechange = function(){
		if(http.readyState == 4){
			var response = http.responseText;
			return response;
		}
    };
    http.send(null);
}

function setIDCategoria(id){
	document.form.id_categoria.value = id;
	//alert(document.form.id_categoria.value);	
}