function ajax(url,div,semup)
{

if(div == 'table_principal'){ Effect.Appear('loadingprincipal'); }

w = screen.availWidth;
if(div != 'tabela_enquete'){
if(w > "800"){ scrollTo(0,0); }else{ 
if(div != 'div_pesquisa'){ 
scrollTo(0,255); 
}
}
}
req = null;
if (window.XMLHttpRequest)
{
req = new XMLHttpRequest();
req.onreadystatechange = processReqChange;
req.open("GET",url,true);
req.send(null);
}
else if (window.ActiveXObject)
{
req = new ActiveXObject("Microsoft.XMLHTTP");
if (req)
{
req.onreadystatechange = processReqChange;
req.open("GET",url,true);
req.send();
}
}
}
function processReqChange()
{
if(div == 'table_principal'){ document.getElementById(div).innerHTML = "<img src='./imagens/carregando.gif'>"; }
if(div == 'pdir'){ document.getElementById(div).innerHTML = "<img src='imagens/carregando_popup.gif'>"; }
if (req.readyState == 4)
{
if (req.status ==200)
{
document.getElementById(div).innerHTML = req.responseText;
if(div == 'table_principal'){ Effect.Fade('loadingprincipal'); }
}
else
{
document.getElementById(div).innerHTML = "Houve um problema ao obter os dados com o servidor:<br><br><b>"+req.statusText;
}
}
}