function jah(url, params, target) {
    // native XMLHttpRequest object
    document.getElementById(target).innerHTML = '<div style=\"position:absolute; left:50%; margin-left:-100px; top:430px; \"><img src=\"../images/icon_wait.gif\" /></div>';
    if (window.XMLHttpRequest) {
        req = new XMLHttpRequest();
        req.onreadystatechange = function() {jahDone(target);};
        req.open("POST", url, "TRUE");
        req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1");
		req.setRequestHeader("Cache-Control", "no-store, no-cache, must-revalidate");
		req.setRequestHeader("Cache-Control", "post-check=0, pre-check=0");
		req.setRequestHeader("Pragma", "no-cache");
        req.send(params);
    // IE/Windows ActiveX version
    } else if (window.ActiveXObject) {
        req = new ActiveXObject("Microsoft.XMLHTTP");
        if (req) {
            req.onreadystatechange = function() {jahDone(target);};
            req.open("POST", url, "TRUE");
            req.setRequestHeader("Content-Type", "application/x-www-form-urlencoded; charset=iso-8859-1");
			req.setRequestHeader("Cache-Control", "no-store, no-cache, must-revalidate");
			req.setRequestHeader("Cache-Control", "post-check=0, pre-check=0");
			req.setRequestHeader("Pragma", "no-cache");
            req.send(params);
        }
    }
}    

function jahDone(target) {
    // only if req is "loaded"
    if (req.readyState == 4) {
        // only if "OK"
        if (req.status == 200) {
            results = req.responseText;
            document.getElementById(target).innerHTML = results;
        } else {
            document.getElementById(target).innerHTML="jah error:\n" +
                req.statusText;
        }
    }
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

function showImages() {
  divs = document.getElementsByTagName('div');
  for(i=0; i<divs.length; i++){
  		if(divs[i].className == 'imgpeq_retrato' || divs[i].className == 'imgpeq_paisagem')
  			divs[i].style.display = "block";
  		if(divs[i].id == 'imagem_aguardando')
  			divs[i].style.display = "none";
  		if(divs[i].id == 'fotosConteudo')
  			divs[i].style.display = "block";
  } 
  
}
addLoadEvent(showImages);