var homepage = { version: 1.0 }

homepage.addEvent = function(object, eventName, fn) {
	if (document.addEventListener) object.addEventListener(eventName, fn, false);
	else object.attachEvent('on' + eventName, fn);
}

homepage.removeEvent = function(object, eventName, fn) {
	if (document.removeEventListener) object.removeEventListener(eventName, fn, false);
	else object.detachEvent('on' + eventName, fn);
}

// Home page load function
homepage.addEvent(window, 'load', function() { 
	var tmpObj = new homepage.lowerTabs();
	//new homepage.preloader();
        document.body.style.minHeight = (homepage.util.getDocHeight()) + 'px';
        homepage.lightwindowLoader();
        homepage.dim = new homepage.dimmer(); 
});

// Preloader
homepage.preloader = function() {
	var f = document.createElement('iframe');
	f.id = 'iframecahce';
	f.style.display = 'none';
	document.body.appendChild(f);
	var doc = document.getElementById('iframecahce').contentDocument;
	if (typeof(doc) == 'undefined' || doc == null) doc = document.getElementById('iframecahce').contentWindow.document;
	doc.location = '/includes/homepagecache.htm';
}
// Lightwindow (clone) initialiser
homepage.lightwindowLoader = function() {
var elements = document.getElementsByTagName('a');
	for(var i=0; i<elements.length; i++) if(elements[i].className) if(elements[i].className.indexOf('lightwindow') > -1) {
	new homepage.lightwindow(elements[i]);
}
}
// Lightwindow (clone) object creator
homepage.lightwindow = function(item) {
	var self = this;
	this.item = item;
	this.params = { };
	this.container = null;
	this.currentHeight = 0;
	this.iframe = null;
	this.setParams = function() {
		var params = self.item.getAttribute('params').split(/,/g);
		for(var i=0; i<params.length; i++) {
			var v = params[i].split(/\=/);
			if(v.length == 2) eval('self.params.' + v[0] + ' = ' + v[1]);
		}
		self.height = (self.params.lightwindow_height * 1.0) + 43;
		self.width = (self.params.lightwindow_width * 1.0) + 16;
	}
	this.setSize = function() {
		var s = homepage.util.getWindowSize();
		var offset = 0;
		if(navigator.appVersion.indexOf('MSIE 6') > -1) {
		if(window.pageYOffset) offset = window.pageYOffset;
		else if(document.documentElement) offset = document.documentElement.scrollTop;
		else offset = document.body.scrollTop;
		}
		self.container.style.width = self.currentWidth + 'px';
		self.container.style.height = self.currentHeight + 'px';
		self.container.style.left = Math.round((s.w - self.currentWidth) / 2) + 'px';
		self.container.style.top = Math.round(((s.h - self.currentHeight) / 2) + offset) + 'px';
		self.container.style.display = 'block';
	}
	this.createTitle = function() {
		var t = document.createElement('div');
		var a = document.createElement('a');
		a.innerHTML = 'Close';
		t.appendChild(a);
		t.className = 'titlebar';
		a.onclick = self.hide;
		self.container.appendChild(t);
	}
	this.show = function() {
		homepage.dim.callBack = self.animate;
		self.container = document.createElement('div');
		self.container.id = 'dM_lightwindow';
		self.currentHeight = 1;
		document.body.appendChild(self.container);
		homepage.dim.show();
		homepage.addEvent(window, 'resize', self.setSize);
		homepage.addEvent(window, 'scroll', self.setSize);
		self.createTitle();
		if(self.params.precache == 'true') self.createFrame(true);
		return false;
	}
	this.animate = function() {
		var diff = (self.height - self.currentHeight) / 4;
		if(diff < 1) diff = 1;
			self.currentHeight = self.currentHeight + Math.round(diff);
			self.currentWidth = Math.round((self.currentHeight / self.height) * self.width);
			self.setSize();
		if(self.currentHeight < self.height) setTimeout(self.animate, 20);
		else self.complete();
	}
	this.createFrame = function(precache) {
		if(this.iframe == null) {
		this.iframe = document.createElement('iframe');
		this.iframe.id = 'lightwindowIframe';
		this.iframe.doc = function() {
			var doc = document.getElementById('lightwindowIframe').contentDocument;
			if (typeof(doc) == 'undefined' || doc == null) doc = document.getElementById('lightwindowIframe').contentWindow.document;
			return doc;
		}
		this.iframe.style.width = (this.width- 16) + 'px';
		this.iframe.style.height = (this.height - 36) + 'px';
		this.iframe.style.position = 'absolute';
		this.iframe.style.top = '33px';
		this.iframe.style.left = '8px';
		this.iframe.frameBorder = '0';
		this.iframe.scrolling = 'no';
		this.container.appendChild(this.iframe);
		this.iframe.doc().location = this.item.href;
	}
	if(precache) this.iframe.style.display = 'none';
	else this.iframe.style.display = 'block';
	}
	this.complete = function() {
		homepage.dim.dimmer.onclick = self.hide;
		self.createFrame(false);
	}
	this.hide = function() {
		homepage.dim.hide();
		document.body.removeChild(self.container);
		homepage.removeEvent(window, 'resize', self.setSize);
		homepage.removeEvent(window, 'scroll', self.setSize);
		self.container = null;
		self.iframe = null;
	}
	this.setParams();
	this.item.onclick = this.show;
} 

// Lower tabs show/hider
homepage.lowerTabs = function() {
	var self = this;
	var elements = document.getElementsByTagName('a');
	this.tabs = new Array();
	for(var i=0; i<elements.length; i++) if(elements[i].className) if(elements[i].className.indexOf('lowertab') > -1) this.tabs.push(elements[i]);
	if(this.tabs.length == 0) this.tabs = null;
	this.activeTab = null;
	this.nextTab = null;
	this.animating = false;

	this.init = function() {
		for(var i = 0; i < this.tabs.length; i++) {
			var t = this.tabs[i];
			t.content = document.getElementById(t.href.substring(t.href.indexOf('#') + 1));
			if(t.content) {
				t.content.fullHeight = t.content.offsetHeight;
				t.content.height = 0;
				t.content.style.height = '0px';
				t.style.cursor = 'pointer';
				t.removeAttribute('href');
			}
			t.onclick = this.tabClick;
		}
	}
	
	this.tabClick = function(e, element) {
		if(element == null) element = this;
		if(self.animating || element.content == null) return false;
	
		if(self.activeTab && self.activeTab != element) 
		{
			self.nextTab = element;
			self.animating = true;
			self.rad = -(Math.PI / 2);
			document.body.style.minHeight = (homepage.util.getDocHeight()) + 'px';			
			self.AnimHideTab();
		} 
		else if (!self.activeTab)
		{
			self.nextTab = element;
			self.animating = true;
			self.rad = 0;
			self.AnimShowTab();
		}
		return false;
	}
	
	this.AnimHideTab = function() {
		self.rad = self.rad + (Math.PI / 40);
		var h = self.activeTab.content.fullHeight * (1 - Math.cos(self.rad));
		self.activeTab.content.style.height = Math.round(h) + 'px';
		
		if(Math.round(h) == 0) self.AnimShowTab();
		else setTimeout(self.AnimHideTab, 10);
	}
	
	this.AnimShowTab = function() {
		
		self.rad = self.rad + (Math.PI / 40);
		var h = self.nextTab.content.fullHeight * (1 - Math.cos(self.rad));
		self.nextTab.content.style.height = Math.round(h) + 'px';
		
		if(Math.round(h) == self.nextTab.content.fullHeight) 
		{
			document.body.style.minHeight = '0px';	
			self.activeTab = self.nextTab;
			self.animating = false;
			
		} 
		else setTimeout(self.AnimShowTab, 10);
	}
	
	if(this.tabs != null) if(this.tabs.length > 0) this.init();
}

homepage.util = {
	getBodySize: function() {
		return { w: Math.max(Math.max((window.innerWidth ? window.innerWidth : 0), (document.documentElement ? document.documentElement.clientWidth : 0)), (document.body ? document.body.clientWidth : 0)),
		h: Math.max(Math.max((window.innerHeight ? window.innerHeight : 0), (document.documentElement ? document.documentElement.clientHeight : 0)), (document.body ? document.body.clientHeight : 0)) };
	},
	getWindowSize: function() {
		if (window.innerHeight) return { w: self.innerWidth, h: self.innerHeight }
		if (document.documentElement && document.documentElement.clientHeight) return {w: document.documentElement.clientWidth, h: document.documentElement.clientHeight }
		if (document.body) return { w: document.body.clientWidth, h: document.body.clientHeight }
	},
	getDocHeight: function() {
		var D = document;
		return Math.max(
		Math.max(D.body.scrollHeight, D.documentElement.scrollHeight),
		Math.max(D.body.offsetHeight, D.documentElement.offsetHeight),
		Math.max(D.body.clientHeight, D.documentElement.clientHeight)
		) - (navigator.appName.indexOf('webkit') > -1 ? 0 : 12) - (navigator.appName.toLowerCase().indexOf('microsoft') > -1 ? 25 : 0);
	}
} 

homepage.dimmer = function() {
	var self = this;
	this.callBack = null;
	this.init = function() {
		this.dimmer = document.createElement('div');
		this.dimmer.style.background = 'black';
		this.dimmer.style.position = 'absolute';
		this.dimmer.style.left = this.dimmer.style.top = '0';
		this.dimmer.style.display = 'none';
		this.opacity = 0;
		this.setOpacity();
		document.body.appendChild(this.dimmer);
		homepage.addEvent(window, 'resize', self.setSize);
	}
	this.setSize = function() {
		if(self.dimmer.style.display != 'none') {
			var s = homepage.util.getBodySize();
			self.dimmer.style.width = (s.w) + 'px';
			self.dimmer.style.height = ((s.h > document.body.scrollHeight ? s.h : document.body.scrollHeight) + 1) + 'px';
		}
	}
	this.setOpacity = function() {
		if(navigator.appName.toLowerCase().indexOf('microsoft') > -1) this.dimmer.style.filter = 'alpha(opacity=' + Math.round(this.opacity * 100) + ')';
		this.dimmer.style.opacity = this.opacity;
		this.dimmer.style.MozOpacity = this.opacity;
	}
	this.dim = function() {
		self.opacity += 0.1;
		self.setOpacity();
		if(self.opacity < 0.5) setTimeout(self.dim, 10);
		else if (self.callBack != null) self.callBack();
	}
	this.undim = function() {
		self.opacity -= 0.2;
		if(self.opacity < 0) self.opacity = 0;
		self.setOpacity();
		if(self.opacity > 0) setTimeout(self.undim, 10);
		else self.dimmer.style.display = 'none';
	}
	this.hide = function() {
		this.setSize();
		this.undim();
		this.dimmer.onclick = null;
		this.callBack = null;
	}
	this.show = function() {
		this.dimmer.style.display = 'block';
		this.setSize();
		this.dim();
	}
	this.init()
}