function objXMLHttp() {

	if (window.XMLHttpRequest) { // Mozilla, Safari, ...
		var objetoXMLHttp = new XMLHttpRequest();
		return objetoXMLHttp;
	} else if (window.ActiveXObject) { // IE
			
		var versoes = [ "MSXML2.XMLHttp.6.0", "MSXML2.XMLHttp.5.0",
						"MSXML2.XMLHttp.4.0","MSXML2.XMLHttp.3.0",
						"MSXML2.XMLHttp","Microsoft.XMLHttp"
				];
		
				for (var i = 0; i < versoes.length; i++) {
					try {
						var objetoXMLHttp = new ActiveXObject(versoes[i]);
						return objetoXMLHttp;
					} catch (ex) {
						//nada aqui
					}
				}
	}
	return false;
}

function enviar(obj, url) {

	var dados = "param="+obj.value;
    var oXMLHttp = objXMLHttp();
    oXMLHttp.open("POST", url, true);
    oXMLHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");

    oXMLHttp.onreadystatechange = function () {
        if (oXMLHttp.readyState == 4) {
            if (oXMLHttp.status == 200) {
				//alert(oXMLHttp.responseText);
                innerSubCat(oXMLHttp.responseText);
            } else {
                alert("An error ocurred: "+ oXMLHttp.statusText);
            }
        }
    };
	oXMLHttp.send(dados);
	return false;
}

function innerSubCat(html) {
	document.getElementById('divModel').innerHTML=html;
}

function checkForm111 (){
//	opcion=document.tabSearch.model.value;
	opcion = document.getElementById("cf").value;
	document.tabSearch.action = "http://autos.terra.com/modelos_autos/"+opcion+"/";
	document.tabSearch.submit(); 
}

function checkModelForm(){
	document.modelSearch.action = "http://autos.terra.com/modelos_autos/"+document.getElementById("cf").value+"/";
	document.modelSearch.submit(); 
}