function openAjax() {
var Ajax;
try {
Ajax = new XMLHttpRequest();
} catch(ee) {
try {
Ajax = new ActiveXObject("Msxml2.XMLHTTP");
} catch(e) {
try {
Ajax = new ActiveXObject("Microsoft.XMLHTTP");
} catch(e) {
Ajax = false;
}
}
}
return Ajax;
}

function carrega(pg, id){

ajax = new openAjax();

var pagina = document.getElementById(pg);
var div = document.getElementById(id);

ajax.onreadystatechange = function(){
if(ajax.readyState == 1){div.innerHTML="<center><BR><span style='text-decoration:blink;'>Carregando...</span></center>";}
if(ajax.readyState == 4){div.innerHTML=ajax.responseText;}

}
ajax.open("GET",pg,true);
ajax.send(null);
}

function enviarForm(url, campos, destino) {

ajax2 = new openAjax();
var elemento = document.getElementById(destino);

ajax2.onreadystatechange = function(){
if(ajax2.readyState == 1){elemento.innerHTML="<center><BR><span style='text-decoration:blink;'>Carregando...</span></center>";}
if(ajax2.readyState == 4){elemento.innerHTML=ajax2.responseText;}
}
ajax2.open('POST', url+'&'+campos, true);
ajax2.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
ajax2.setRequestHeader("Content-length", campos.length);
ajax2.send(campos);

}

function BuscaCat(cat,destino)
{
ajax3 = new openAjax();
var q = cat.value;
var url3="inc_classi_cat.php";
var divmodelo = document.getElementById(destino);
url3=url3+"?cat="+q;
ajax3.onreadystatechange=function(){
if(ajax3.readyState == 1){divmodelo.innerHTML="<select name='carregando'><option value=''>...CARREGANDO...</option></select>";}
if(ajax3.readyState == 4){divmodelo.innerHTML=ajax3.responseText;}
}
ajax3.open("GET",url3,true);
ajax3.send(null);
}