function GetXmlHttpObject()
{ 
  var objXMLHttp=null;
  if (window.XMLHttpRequest)
  {
    objXMLHttp=new XMLHttpRequest();
  }
  else if (window.ActiveXObject)
  {
    objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP");
  }
  return objXMLHttp;
}
function getHTML(gallery_url)
{
  var vars;
  var xmlHttp;
  xmlHttp=GetXmlHttpObject();
  if (xmlHttp==null)
  {
    alert ("Browser does not support HTTP Request");
    return;
  } 
  var url=gallery_url;
  xmlHttp.onreadystatechange=function() 
  {
    if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
    { 
      document.getElementById('pics').innerHTML=xmlHttp.responseText; //sends HTML to an element
   //   alert(xmlHttp.responseText);

      
      //or javascriptVar = xmlHttp.responseText;
    } 
  };
  
  
  xmlHttp.open("GET",url,true);
  xmlHttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded'); 
  xmlHttp.send(null);
  
}