/* common */
function getXmlHttpObject() {
  var xmlHttp=null;
  try {
    xmlHttp=new XMLHttpRequest();
  } catch( e ) {
    try {
      xmlHttp=new ActiveXObject( "Msxml2.XMLHTTP" );
    } catch( e ) {
      xmlHttp=new ActiveXObject( "Microsoft.XMLHTTP" );
    }
  }
  return xmlHttp;
}


/* save photo */
function savePhoto( id ) {
  xmlHttp=getXmlHttpObject();
  if( xmlHttp==null ) { return; }
  var DHTML=( document.getElementById || document.all );
  if( DHTML ) {
    xmlHttp.onreadystatechange=function() { savePhotoDone(); };
    var url="/ajax/save-photo.php?id="+id+"&t="+Math.random();
    xmlHttp.open( "GET",url,true );
    xmlHttp.send( null );
  }
}

function savePhotoDone() {
  if( xmlHttp.readyState==4 ) {
    var DHTML=( document.getElementById || document.all );
    if( DHTML ) {
      var response=xmlHttp.responseText;
      var x1=new getObj( 'savecounter' );
      x1.obj.innerHTML=response;
      showinfo( 1,"Photo saved","Use the links on the left menu to view your saved items and basket." );
    }
  }
}


/* buy photo */
function buyPhoto( id ) {
  xmlHttp=getXmlHttpObject();
  if( xmlHttp==null ) { return; }
  var DHTML=( document.getElementById || document.all );
  if( DHTML ) {
    xmlHttp.onreadystatechange=function() { buyPhotoDone(); };
    var url="/ajax/buy-photo.php?id="+id+"&t="+Math.random();
    xmlHttp.open( "GET",url,true );
    xmlHttp.send( null );
  }
}

function buyPhotoDone() {
  if( xmlHttp.readyState==4 ) {
    var DHTML=( document.getElementById || document.all );
    if( DHTML ) {
      var response=xmlHttp.responseText;
      var x1=new getObj( 'basketcounter' );
      x1.obj.innerHTML=response;
      showinfo( 1,"Photo Added To Basket","Use the links on the left menu to view your saved items and basket." );
    }
  }
}