/*
Yetii - Yet (E)Another Tab Interface Implementation
version 1.3
http://www.kminek.pl/lab/yetii/
Copyright (c) 2007-2008 Grzegorz Wojcik
Code licensed under the BSD License:
http://www.kminek.pl/bsdlicense.txt
*/

function Yetii() {

	this.defaults = {

		id: null,
		active: 1,
		interval: null,
		wait: null,
		persist: null,
		tabclass: 'tab',
		activeclass: 'active',
		callback: null

	};

	for (var n in arguments[0]) { this.defaults[n]=arguments[0][n]; };

	this.getTabs = function() {

        var retnode = [];
        var elem = document.getElementById(this.defaults.id).getElementsByTagName('*');

		var regexp = new RegExp("(^|\\s)" + this.defaults.tabclass.replace(/\-/g, "\\-") + "(\\s|$)");

        for (var i = 0; i < elem.length; i++) {
        if (regexp.test(elem[i].className)) retnode.push(elem[i]);
        }

        return retnode;

    };

	this.links = document.getElementById(this.defaults.id + '-nav').getElementsByTagName('a');

	this.show = function(number){

        for (var i = 0; i < this.tabs.length; i++) {
	        this.tabs[i].style.display = ((i+1)==number) ? 'block' : 'none';
	        this.links[i].className = ((i+1)==number) ? 't'+number+this.defaults.activeclass : '';
		}

		this.defaults.active = number;
		if (this.defaults.callback) this.defaults.callback(number);

    };

	this.rotate = function(interval){

        this.show(this.defaults.active);
        this.defaults.active++;

        if(this.defaults.active > this.tabs.length) this.defaults.active = 1;


        var self = this;

		if (this.defaults.wait) clearTimeout(this.timer2);

        this.timer1 = setTimeout(function(){self.rotate(interval);}, interval*1000);

    };

	this.next = function() {

		this.defaults.active++;
    	if(this.defaults.active > this.tabs.length) this.defaults.active = 1;
		this.show(this.defaults.active);

	};

	this.previous = function() {

		this.defaults.active--;
    	if(!this.defaults.active) this.defaults.active = this.tabs.length;
		this.show(this.defaults.active);

	};

	this.parseurl = function(tabinterfaceid){
		var result=window.location.search.match(new RegExp(tabinterfaceid+"=(\\d+)", "i"));
		return (result==null)? null : parseInt(RegExp.$1);
	};

	this.createCookie = function(name,value,days) {
		if (days) {
			var date = new Date();
			date.setTime(date.getTime()+(days*24*60*60*1000));
			var expires = "; expires="+date.toGMTString();
		}
		else var expires = "";
		document.cookie = name+"="+value+expires+"; path=/";
	};

	this.readCookie = function(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;
	};



	this.tabs = this.getTabs();

	this.defaults.active = (this.parseurl(this.defaults.id)) ? this.parseurl(this.defaults.id) : this.defaults.active;

	if (this.defaults.persist && this.readCookie(this.defaults.id)) this.defaults.active = this.readCookie(this.defaults.id);
	this.show(this.defaults.active);
	var first = this.readCookie(this.defaults.id);
	var self = this;

	for (var i = 0; i < this.links.length; i++) {
		this.links[i].customindex = i+1;

		if (first != null && (this.defaults.active == 1 || this.defaults.active == 2 || this.defaults.active == 3 || this.defaults.active == 4 || this.defaults.active == 5 || this.defaults.active == 6) ) {
			this.links[i].onclick = function() {
				if (self.timer1) clearTimeout(self.timer1);
				if (self.timer2) clearTimeout(self.timer2);

				self.show(this.customindex);
				if (self.defaults.persist) self.createCookie(self.defaults.id, this.customindex, 0);
				//alert(this.customindex);
				if (self.defaults.wait) self.timer2 = setTimeout(function(){self.rotate(self.defaults.interval);}, self.defaults.wait*1000);

				if (this.customindex == 1)
					location.href='site,3,trade';
				if (this.customindex == 2)
					location.href='site,8,products';
				if (this.customindex == 3)
					location.href='site,26,airport-facilities';
				if (this.customindex == 4)
					location.href='site,32,reference';
				if (this.customindex == 5)
					location.href='site,33,pdf-folders';
				if (this.customindex == 6)
					location.href='gallery,50,Conveyors';
				if (this.customindex == 7)
					location.href='site,34,work';
				return false;
			};
		} else {

			if (i == 3 || i == 4 || i == 5 || i == 6) {
				this.links[i].onclick = function() {
					if (self.timer1) clearTimeout(self.timer1);
					if (self.timer2) clearTimeout(self.timer2);

					self.show(this.customindex);
					if (self.defaults.persist) self.createCookie(self.defaults.id, this.customindex, 0);
					//alert(this.customindex);
					if (self.defaults.wait) self.timer2 = setTimeout(function(){self.rotate(self.defaults.interval);}, self.defaults.wait*1000);

					if (this.customindex == 4)
						location.href='site,32,reference';
					if (this.customindex == 5)
						location.href='site,33,pdf-folders';
					if (this.customindex == 6)
						location.href='gallery,50,Conveyors';
					if (this.customindex == 7)
						location.href='site,34,work';
					return false;
				};
			} else {

				this.links[i].onclick = function(){

					if (self.timer1) clearTimeout(self.timer1);
					if (self.timer2) clearTimeout(self.timer2);

					self.show(this.customindex);
					if (self.defaults.persist) self.createCookie(self.defaults.id, this.customindex, 0);

					if (self.defaults.wait) self.timer2 = setTimeout(function(){self.rotate(self.defaults.interval);}, self.defaults.wait*1000);

					if (this.customindex == 1 || this.customindex == 2 || this.customindex == 3) {
						changeTab(this.customindex);
					}
					return false;
				};
			}
		}
    }

	if (this.defaults.interval) this.rotate(this.defaults.interval);

};