/*
Created By: Chris Campbell
Website: http://particletree.com
Date: 2/1/2006

Inspired by the lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
*/

/*-------------------------------GLOBAL VARIABLES------------------------------------*/

var detect = navigator.userAgent.toLowerCase();
var OS,browser,version,total,thestring;

/*-----------------------------------------------------------------------------------------------*/

//Browser detect script origionally created by Peter Paul Koch at http://www.quirksmode.org/

function getBrowserInfo() {
	if (checkIt('konqueror')) {
		browser = "Konqueror";
		OS = "Linux";
	}
	else if (checkIt('safari')) browser 	= "Safari"
	else if (checkIt('omniweb')) browser 	= "OmniWeb"
	else if (checkIt('opera')) browser 		= "Opera"
	else if (checkIt('webtv')) browser 		= "WebTV";
	else if (checkIt('icab')) browser 		= "iCab"
	else if (checkIt('msie')) browser 		= "Internet Explorer"
	else if (!checkIt('compatible')) {
		browser = "Netscape Navigator"
		version = detect.charAt(8);
	}
	else browser = "An unknown browser";

	if (!version) version = detect.charAt(place + thestring.length);

	if (!OS) {
		if (checkIt('linux')) OS 		= "Linux";
		else if (checkIt('x11')) OS 	= "Unix";
		else if (checkIt('mac')) OS 	= "Mac"
		else if (checkIt('win')) OS 	= "Windows"
		else OS 								= "an unknown operating system";
	}
}

function checkIt(string) {
	place = detect.indexOf(string) + 1;
	thestring = string;
	return place;
}

/*-----------------------------------------------------------------------------------------------*/

Event.observe(window, 'load', initialize, false);
Event.observe(window, 'load', getBrowserInfo, false);
Event.observe(window, 'unload', Event.unloadCache, false);

var lightbox = Class.create();

lightbox.prototype =
{
  yPos : 0,
  xPos : 0,
  
  initialize: function(ctrl)
  {
    this.content = ctrl.href;
    Event.observe(ctrl, 'click', this.activate.bindAsEventListener(this), false);
    ctrl.onclick = function(){return false;};
  },
  
  // Turn everything on - mainly the IE fixes
  activate: function()
  {
    if (browser == 'Internet Explorer')
    {
      this.getScroll();
      this.prepareIE('100%', 'hidden');
      this.setScroll(0,0);
      this.hideSelects('hidden');
    }
    this.displayLightbox("block");
  },
  
  // Ie requires height to 100% and overflow hidden or else you can scroll down past the lightbox
  prepareIE: function(height, overflow)
  {
    bod = document.getElementsByTagName('body')[0];
    bod.style.height = height;
    bod.style.overflow = overflow;
    
    htm = document.getElementsByTagName('html')[0];
    htm.style.height = height;
    htm.style.overflow = overflow; 
  },
  
  // In IE, select elements hover on top of the lightbox
  hideSelects: function(visibility)
  {
    selects = document.getElementsByTagName('select');
    for(i = 0; i < selects.length; i++)
    {
      selects[i].style.visibility = visibility;
  	}
  },
  
  // Taken from lightbox implementation found at http://www.huddletogether.com/projects/lightbox/
  getScroll: function()
  {
    if (self.pageYOffset)
    {
      this.yPos = self.pageYOffset;
    }
    else if (document.documentElement && document.documentElement.scrollTop)
    {
      this.yPos = document.documentElement.scrollTop; 
    }
    else if (document.body)
    {
      this.yPos = document.body.scrollTop;
    }
  },
  
  setScroll: function(x, y)
  {
    window.scrollTo(x, y); 
  },
  
  displayLightbox: function(display)
  {
    $('overlay').style.display = display;
    $('lightbox').style.display = display;
    if(display != 'none') this.loadInfo();
  },
  
  // Begin Ajax request based off of the href of the clicked linked
  loadInfo: function()
  {
    var myAjax = new Ajax.Request(
        this.content,
        {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
  	);
  },
  
  // Display Ajax response
  processInfo: function(response)
  {
    info = "<div id='lbContent'>" + response.responseText + "</div>";
    new Insertion.Before($('lbLoadMessage'), info)
    $('lightbox').className = "done";	
    this.actions();			
  },
  
  // Search through new links within the lightbox, and attach click event
  actions: function()
  {
    lbActions = document.getElementsByClassName('lbAction');
    
    for(i = 0; i < lbActions.length; i++)
    {
      Event.observe(lbActions[i], 'click', this[lbActions[i].rel].bindAsEventListener(this), false);
      lbActions[i].onclick = function(){return false;};
    }
  },
  
  // Example of creating your own functionality once lightbox is initiated
  insert: function(e)
  {
    link = Event.element(e).parentNode;
    Element.remove($('lbContent'));
    
    var myAjax = new Ajax.Request(
      link.href,
      {method: 'post', parameters: "", onComplete: this.processInfo.bindAsEventListener(this)}
    );
  },
  
  // Example of creating your own functionality once lightbox is initiated
  deactivate: function()
  {
    Element.remove($('lbContent'));
    
    if (browser == "Internet Explorer")
    {
      this.setScroll(0,this.yPos);
      this.prepareIE("auto", "auto");
      this.hideSelects("visible");
    }
    
    this.displayLightbox("none");
  }
}

/*-----------------------------------------------------------------------------------------------*/

// Onload, make all links that need to trigger a lightbox active
function initialize()
{
	addLightboxMarkup();
	lbox = document.getElementsByClassName('lbOn');
	for(i = 0; i < lbox.length; i++) {
		valid = new lightbox(lbox[i]);
	}
}

// Add in markup necessary to make this work. Basically two divs:
// Overlay holds the shadow
// Lightbox is the centered square that the content is put into.
function addLightboxMarkup()
{
  bod           = document.getElementsByTagName('body')[0];
  overlay       = document.createElement('div');
  overlay.id    = 'overlay';
  lb            = document.createElement('div');
  lb.id         = 'lightbox';
  lb.className  = 'loading';
  lb.innerHTML  = '<div id="lbLoadMessage">' +
                  '<p>Loading</p>' +
                  '</div>';
  bod.appendChild(overlay);
  bod.appendChild(lb);
}

function sendFormtoURL(url)
{
	new Ajax.Updater('lbContent', url, { method: 'post', parameters: Form.serialize($('content_form'),true) });
}

function closeLightboxes()
{
  if(lightbox.prototype)
    lightbox.prototype.displayLightbox('none');

  if($('lbHeader'))
    Element.remove($('lbHeader'));

  if($('lbContent'))
    Element.remove($('lbContent'));
}

// Close the lightbox if ESC is pressed

document.onkeypress=function(e)
{
  var KeyID = (window.event) ? event.keyCode : e.keyCode;

  if(KeyID == 27)
  {
    closeLightboxes();
  }
}

function sendandkill()
{
  sendForm();
  closeLightboxes();  
}

function sendForm()
{
  document.lbform.submit();
}