//
//	Additional methods for Element added by SU, Couloir
//	- further additions by Lokesh Dhakar (huddletogether.com)
//  - setLeft added by Eoghan O'Brien (eoghanobrien.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";
	},
	setLeft: function(element,t) {
	   	element = $(element);
    	element.style.left = 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;
	}
});

//
// 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;
}

var Auth = Class.create();

Auth.prototype = {
	initialize: function()
	{
		if (!document.getElementsByTagName){ return; }
		var objBody = document.getElementsByTagName("body").item(0);

		// Create & Append Overlay
		var objOverlay = document.createElement("div");
		objOverlay.setAttribute('id','overlay');
		objOverlay.style.display = 'none';
		objOverlay.onclick = function() { myAuth.end(); return false; }
		objBody.appendChild(objOverlay);

		// Create Authentication Container
		var authBox = document.createElement("div");
		authBox.setAttribute('id', 'quickAuth');
		objBody.appendChild(authBox);

		// Create Login Dialog
		var loginBox = document.createElement("div");
		loginBox.setAttribute('id', 'login');
		
		authBox.innerHTML = '<div id="login">'+'<h1>Administration Authentication</h1>'+'<img src="img/login.png" title="Please Log In" class="loginImage"/>'+'<div id="login-wrapper" class="clearfix">'+'<label for="user">Username:</label>'+'<input type="text" id="user" name="user" class="textbox"/>'+'<label for="pass">Password:</label>'+'<input type="password" id="pass" name="pass" class="textbox"/>'+'<input type="submit" name="login" class="button" onclick="myAuth.authorize();" value="Log In"/>'+'</div>'+'</div>';
	
		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setHeight('overlay', arrayPageSize[1]);
		// Set the positioning from the top
		var topDim = (arrayPageSize[1] / 2) - 110;
		Element.setTop('quickAuth', topDim);
		// Set the positioning from the left
		var leftDim = (arrayPageSize[2] / 2) - 200;
		Element.setLeft('quickAuth', leftDim);
		new Effect.Appear('overlay', { duration: 0.2, from: 0.0, to: 0.8 });
	},

	authorize: function()
	{
		var d = new Date();
		var time = d.getTime();
		var ajax = new Ajax.Updater(
			'login-wrapper',
			'php/request.php?action=login',
			{ // options
				postBody: '&user='+$F('user')+'&pass='+$F('pass')+'&time='+time,
				onComplete: showResponse
			}
		);
		function showResponse(req)
		{
			if (req.responseText == 'index.php' || req.responseText == 'profile.php')
			{
				location.href = req.responseText;
			}
			else
			{
				$('login-wrapper').innerHTML = req.responseText;
			}
		}
	},
	
	end: function()
	{
		Element.hide('quickAuth');
		new Effect.Fade('overlay', { duration: 0.2});
	}
}

//Event.onDOMReady(initAuth);