var xmlHttp4;

function showHome(str)
{ 
xmlHttp4=GetXmlHttpObject();
if (xmlHttp4==null)
 {
 alert ("Browser does not support HTTP Request");
 return;
 }
var url="home.php";
url=url+"?Mostrar="+str;
url=url+"&sid="+Math.random();
if(str!='0'){
document.getElementById("txtHint4").innerHTML='<div align="center"><br><br><img src="images/ajax-loader.gif" alt="" border="0"></div>';
}
xmlHttp4.onreadystatechange=stateChanged4;
xmlHttp4.open("GET",url,true);
xmlHttp4.send(null);
}

function stateChanged4() 
{ 
if (xmlHttp4.readyState==4 || xmlHttp4.readyState=="complete")
 { 
 document.getElementById("txtHint4").innerHTML=xmlHttp4.responseText;
 } 
}

function GetXmlHttpObject()
{
var xmlHttp4=null;
try
 {
 // Firefox, Opera 8.0+, Safari
 xmlHttp4=new XMLHttpRequest();
 }
catch (e)
 {
 //Internet Explorer
 try
  {
  xmlHttp4=new ActiveXObject("Msxml2.XMLHTTP");
  }
 catch (e)
  {
  xmlHttp4=new ActiveXObject("Microsoft.XMLHTTP");
  }
 }
return xmlHttp4;
}