function show_foto(str)
{ 
xmlHttp=GetXmlHttpObject()
if (xmlHttp==null)
 {
 alert ("Browser does not support HTTP Request")
 return
 }
var url="../foto/foto_ajax.php"
url=url+"?"+str
url=url+"&sid="+Math.random()
xmlHttp.onreadystatechange=stateChanged 
xmlHttp.open("GET",url,true)
xmlHttp.send(null)
}

function stateChanged() 
{ 
if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
 { 
 document.getElementById("foto_div").innerHTML=xmlHttp.responseText 
 } 
}


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");
      }
    }
	if (xmlHttp==null)
  {
  alert ("Your browser does not support AJAX!");
  return;
  }
  else 
	{
	return xmlHttp;
	}
}



	function big_fotos(str)
	{
	document.getElementById("big_foto").src = "../images/fotos/"+str;
	
	return true;
	}