function GetXmlHttpObject(handler) {
    var objXmlHttp = null;
    if (!window.XMLHttpRequest) {
        // Microsoft
        objXmlHttp = GetMSXmlHttp();
        if (objXmlHttp != null) {
            objXmlHttp.onreadystatechange = handler;
        }
    }
    else {
        // Mozilla | Netscape | Safari
        objXmlHttp = new XMLHttpRequest();
        if (objXmlHttp != null) {
            objXmlHttp.onload = handler;
            objXmlHttp.onerror = handler;
        }
    }
    return objXmlHttp;
}

function GetMSXmlHttp() {
    var xmlHttp = null;
    var clsids = ["Msxml2.XMLHTTP.6.0",
                  "Msxml2.XMLHTTP.4.0",
                  "Msxml2.XMLHTTP.3.0"];
    for (var i = 0; i < clsids.length && xmlHttp == null; i++) {
        xmlHttp = CreateXmlHttp(clsids[i]);
    }
    return xmlHttp;
}

function CreateXmlHttp(clsid) {
    var xmlHttp = null;
    try {
        xmlHttp = new ActiveXObject(clsid);
        lastclsid = clsid;
        return xmlHttp;
    }
    catch (e) { }
}

function SendXmlHttpRequest(url, responseHandler) {
    
    req = GetXmlHttpObject(responseHandler);

    if (req) {
        req.onreadystatechange = responseHandler;
        req.open('GET', url, true);
        req.setRequestHeader("content-type", "application/x-www-form-urlencoded");
        req.send('');
    }
    else {
        alert('Your browser does not seem to support XMLHttpRequest.');
    }
}

/* Verifica se navagador suporta ajax */
function GetXmlHttpObject()
{
	var xmlHttp=null;
	
	try
	{
		// Firefox, Opera 8.0+, Safari
		xmlHttp=new XMLHttpRequest();
	}
	catch (e)
	{
		// Internet Explorer
		try
		{
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch (e)
		{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	
	return xmlHttp;
}

function enviaRequisicao(endereco, funcao)
{
	xmlHttp=GetXmlHttpObject();
	
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request");
		return;
	} 
	
	xmlHttp.onreadystatechange=funcao;
	xmlHttp.open("GET",endereco,true);
	xmlHttp.send(null);
}

function adicionaClick(campo, item)
{
    item = document.getElementById(item);
    if (item.style.display == 'none')        

        enviaRequisicao("Click.asp?campo="+campo, aguardaRequisicaoAdicionaClick);
        //document.location.href='Click.asp?campo='+campo;
}

function aguardaRequisicaoAdicionaClick() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 	
		
	} 
}

function adicionaClickDownload(campo)
{
        enviaRequisicao("ClickDownload.asp?campo="+campo, aguardaRequisicaoAdicionaClickDownload);
}

function aguardaRequisicaoAdicionaClickDownload() 
{ 
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{ 	
		
	} 
}

 function AbreFecha(nomeCampo)
 {
   	campo = document.getElementById(nomeCampo);
	if (campo.style.display == 'block')
	campo.style.display = 'none';
	else
	campo.style.display = 'block'; 	
}