//
//	Additional methods for Element added by SU, Couloir
//	- further additions by Lokesh Dhakar (huddletogether.com)
//
Object.extend(Element, {
	getWidth: function(element) {
	   	element = $(element);
	   	return element.offsetWidth; 
	},
	setWidth: function(element,w) {
	   	element = $(element);
    	element.style.width = w +"px";
	},
	setHeight: function(element,h) {
   		element = $(element);
    	element.style.height = h +"px";
	},
	setTop: function(element,t) {
	   	element = $(element);
    	element.style.top = t +"px";
	},
	setSrc: function(element,src) {
    	element = $(element);
    	element.src = src; 
	},
	setHref: function(element,href) {
    	element = $(element);
    	element.href = href; 
	},
	setInnerHTML: function(element,content) {
		element = $(element);
		element.innerHTML = content;
	}
});

// -----------------------------------------------------------------------------------

//
//	Extending built-in Array object
//	- array.removeDuplicates()
//	- array.empty()
//
Array.prototype.removeDuplicates = function () {
	for(i = 1; i < this.length; i++){
		if(this[i][0] == this[i-1][0]){
			this.splice(i,1);
		}
	}
}

// -----------------------------------------------------------------------------------

Array.prototype.empty = function () {
	for(i = 0; i <= this.length; i++){
		this.shift();
	}
}

//
// getPageScroll()
// Returns array with x,y page scroll values.
// Core code from - quirksmode.org
//
function getPageScroll(){

	var yScroll;

	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
	}

	arrayPageScroll = new Array('',yScroll) 
	return arrayPageScroll;
}

// -----------------------------------------------------------------------------------

//
// getPageSize()
// Returns array with page width, height and window width, height
// Core code from - quirksmode.org
// Edit for Firefox by pHaez
//
function getPageSize(){
	
	var xScroll, yScroll;
	
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = document.body.scrollWidth;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		windowWidth = self.innerWidth;
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	
	// for small pages with total height less then height of the viewport
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}

	// for small pages with total width less then width of the viewport
	if(xScroll < windowWidth){	
		pageWidth = windowWidth;
	} else {
		pageWidth = xScroll;
	}


	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}

// -----------------------------------------------------------------------------------

//
// getKey(key)
// Gets keycode. If 'x' is pressed then it hides the lightbox.
//
function getKey(e){
	if (e == null) { // ie
		keycode = event.keyCode;
	} else { // mozilla
		keycode = e.which;
	}
	key = String.fromCharCode(keycode).toLowerCase();
	
	if(key == 'x'){
	}
}

// -----------------------------------------------------------------------------------

//
// listenKey()
//
function listenKey () {	document.onkeypress = getKey; }
	
// ---------------------------------------------------

function showSelectBoxes(){
	selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "visible";
	}
	textareas = document.getElementsByTagName("textarea");
	for (i=0;i!=textareas.length;i++) {
		textareas[i].style.display = "";
	}
}

// ---------------------------------------------------

function hideSelectBoxes(){
	selects = document.getElementsByTagName("select");
	for (i = 0; i != selects.length; i++) {
		selects[i].style.visibility = "hidden";
	}
	textareas = document.getElementsByTagName("textarea");
	for (i=0;i!=textareas.length;i++) {
		textareas[i].style.display = "none";
	}
}

// ---------------------------------------------------

//
// pause(numberMillis)
// Pauses code execution for specified time. Uses busy code, not good.
// Code from http://www.faqts.com/knowledge_base/view.phtml/aid/1602
//
function pause(numberMillis) {
	var now = new Date();
	var exitTime = now.getTime() + numberMillis;
	while (true) {
		now = new Date();
		if (now.getTime() > exitTime)
			return;
	}
}
//
// -----------------------------------------------------------------------------------
//
var Loadingbox = Class.create();

Loadingbox.prototype = {
	
	initialize: function() {		
		// The following inserts html at the bottom of the page as follows:
		
		// 		<div id="lb_overlay"></div>
		//		<div id="lb_itembox">
		//			<div id="lb_loading"></div>
		//		</div>
		
		
		var objBody = document.getElementsByTagName("body").item(0);
		
		var objLoadingOverlay = document.createElement("div");
		objLoadingOverlay.setAttribute('id','lb_overlay');
		objLoadingOverlay.style.display = 'none';
		objBody.appendChild(objLoadingOverlay);
		
		var objLoadingbox = document.createElement("div");
		objLoadingbox.setAttribute('id','lb_itembox');
		objLoadingbox.style.display = 'none';
		objBody.appendChild(objLoadingbox);
		
		var objLoadingContainer = document.createElement("div");
		objLoadingContainer.setAttribute('id','lb_loading');
		objLoadingbox.appendChild(objLoadingContainer);
		
	},
	
	//////////////////////////////////////////
	start: function(msg) {	

		hideSelectBoxes();

		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setHeight('lb_overlay', arrayPageSize[1]);
		new Effect.Appear('lb_overlay', { duration: 0.2, from: 0.0, to: 0.8 });
		
		// update the loading message if specified
		if (msg) {
			$('lb_loading').innerHTML = msg;
		} else {
			$('lb_loading').innerHTML = '<h1>Loading... Please wait.</h1>';
		}

		// calculate top offset for the lightbox and display 
		var arrayPageSize = getPageSize();
		var arrayPageScroll = getPageScroll();
		var itemboxTop = arrayPageScroll[1] + (arrayPageSize[3] / 15);
		Element.setTop('lb_itembox', itemboxTop);
		
		new Effect.Appear('lb_itembox', { duration: 0.2, queue: 'end'});	
		new Effect.Appear('lb_loading', { duration: 0.2, queue: 'end'});
	},
	

	
	
	//////////////////////////////////////////
	end: function() {
		new Effect.Fade('lb_loading', { duration: 0.1});
		Element.hide('lb_itembox');
		new Effect.Fade('lb_overlay', { duration: 0.2});
		showSelectBoxes();
	}
}

function initLoadingbox() { loadingbox = new Loadingbox(); }
Event.observe(window, 'load', initLoadingbox, false);