// JavaScript Document
// Author: Arvind Thyagarajan
// Copyright 2009-2010 Arvind Thyagarajan and Alaya Coaching
// All Rights Reserved

// jQuery Slideshow

var slides_loaded = 0;
var slides_count = 0;
var current_slide = -1;
var slides = [];
var slideshowDelay = 10000;
var timer1;
var timer2;
//jQuery.noConflict();
jQuery(document).ready(function() {
	// init slider
	if (jQuery('body.home div.slideshow ul.slides').length > 0) {
		slides_count = jQuery('body.home div.slideshow ul.slides li').length;
		jQuery("body.home div.slideshow ul.slides").hover(
			function() {
				clearTimeout(timer1);
				clearTimeout(timer2);
			},
			function() {
				timer2 = setTimeout("runSlideshow(); ", slideshowDelay);
			}
		);
		
		jQuery('body.home div.slideshow ul.buttons a').bind('click', doNothing);
		
		initSlideshow();
	}
});

function initSlideshow() {
	jQuery('body.home div.slideshow ul.buttons a').unbind('click', doNothing);
	jQuery('body.home div.slideshow ul.buttons a').each(function(i, link) {
		link.index = i;
	});
	
	jQuery('body.home div.slideshow ul.buttons a').click(function() {
		toggleSlideshow(this.index);
		return false;
	});
	
	jQuery('body.home div.slideshow ul.slides').addClass('loaded');
	jQuery('body.home div.slideshow ul.slides li').each(function(i, li) {
		slides.push(li);
		jQuery(li).css('display', 'block');
		jQuery(li).css('opacity', 0);
	});

	toggleSlideshow(-1);
	runSlideshow();
}

function runSlideshow() {
	toggleSlideshow(current_slide+1);
	timer1 = setTimeout("runSlideshow(); ", slideshowDelay);
}

function toggleSlideshow(num) {
	if(num !== current_slide) {
		if (num > (slides_count - 1)) { num = 0; }
		if(current_slide >= 0) {
			// hide previous slide
			jQuery(slides[current_slide]).css({
				'visibility':'visible',
				'opacity': 1
			});
			jQuery(slides[current_slide]).animate({'opacity': 0}, 250, 'linear', function() {
				jQuery(this).css('display', 'none');
			});
	
			// remove button active
			jQuery('body.home div.slideshow ul.buttons li').removeClass('active');
		}
		current_slide = num;
		jQuery(slides[current_slide]).css({
			'visibility':'visible',
			'opacity': 0,
			'display': 'block'
		});
		jQuery(slides[current_slide]).animate({'opacity': 1}, 250, 'linear');
	
		// set button active
		var btn = jQuery('body.home div.slideshow ul.buttons li').get(current_slide);
		jQuery(btn).addClass('active');
	}
}

function doNothing(e) {
	return false;
}