function startup()
{
  ajaxLinks(document);
}

var ajaxCookie = readCookie('disableAjax');
var useAjax = ajaxCookie != null && ajaxCookie == "1" ? false : true;

function ajaxLinks(baseElement)
{
  var ajaxCheckBox = document.getElementById('disableAjax');
  ajaxCheckBox.onclick = function(e)
  {
    if(ajaxCheckBox.checked)
    {
      useAjax = true;
      document.cookie =  'disableAjax=0; path=/';
    }
    else
    {
      useAjax = false;
      document.cookie =  'disableAjax=1; path=/';
    }
    ajaxLinks(document);
  }
  
  if(document.getElementById && document.getElementsByTagName)
  {
    var aDocLinks = baseElement.getElementsByTagName("a");
    var _link;
    for(var i = 0; i < aDocLinks.length; i++)
    {
      _link = aDocLinks[i];
      if(_link.className.match("linkToImage"))
      {
        _link.onclick = function (e)
        {
          if(!useAjax)
          {
            return true;
          }
          var path = getQueryVar("path", this);
          var showImage = getQueryVar("showImage", this);
          var type = getQueryVar("type", this);
          getImage(path, showImage, type);
          return false;
        }
      }
    }
  }
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function getQueryVar(_var, _link)
{
  var link = _link.getAttribute("href", 2).split("?");
  query = link.length == 2 ? link[1] : _link.href;
  var variables = query.split("&");
  for (var i=0;i<variables.length;i++)
  {
    var variable = variables[i].split("=");
    if (variable[0] == _var)
    {
      return variable[1];
    }
  }
  return false;
}


function createRequestObject()
{
  var ro;
  var browser = navigator.appName;
  if(browser == "Microsoft Internet Explorer")
  {
    ro = new ActiveXObject("Microsoft.XMLHTTP");
  } else {
    ro = new XMLHttpRequest();
  }
  return ro;
}

var getImg = createRequestObject();

function getImage(path, showImage, type)
{
  if(getImg.readyState!=1)
  {
    var url;
    //loading('photos');
    var url = basePath + '?run=image&path='+path+'&showImage='+showImage;
    if(type) url += '&type='+type;
    
    getImg.open('get', url);
    getImg.onreadystatechange = function()
    {
      if(getImg.readyState == 4)
      {
        var response = getImg.responseText;
        if(document.getElementById('image') != null)
        {
          document.getElementById('image').innerHTML = response;
         ajaxLinks(document.getElementById('image'));
        }
      }      
    };
    getImg.send(null);
  }
}