/*
 * Javascript functions for "Different template"
 * Author: Dmytro Danylov
 */
function dmValidateField(elm)
{
	if (elm.hasClass('frm_required'))
	{
		if (elm.val() == '')
		{
			elm.addClass('frm_error');
			return false; // error
		}
		else
		{
			elm.removeClass('frm_error');
			return true; // no error
		}
	}
	return true; // no error
}

function dmValidateForm(frm)
{
	var frmElements = frm.find('input,textarea');

	frmElements.each(function() {
		$(this).bind('blur', function() {
			var elm = $(this);
			dmValidateField(elm);
		});
	});

	var wait = false;

	frm.bind('submit', function() {
		var error = false;

		if (wait == true)
			return false;

		wait = true;

		frmElements.each(function() {
			var elm = $(this);
			if (!dmValidateField(elm))
				error = true;
		});

		wait = false;

		if (error == false)
			return true
		else
			return false;
	});
}










var style_cookie_name = "style" ;
var style_cookie_duration = 30 ;

function switch_style ( css_title )
{
  var i, link_tag ;
  for (i = 0, link_tag = document.getElementsByTagName("link") ;
    i < link_tag.length ; i++ ) {
    if ((link_tag[i].rel.indexOf( "stylesheet" ) != -1) &&
      link_tag[i].title) {
      link_tag[i].disabled = true ;
      if (link_tag[i].title == css_title) {
        link_tag[i].disabled = false ;
      }
    }
    createCookie( style_cookie_name, css_title,
      style_cookie_duration );
  }
}
function set_style_from_cookie()
{
  var css_title = readCookie( style_cookie_name );
  if (css_title.length) {
    switch_style( css_title );
  }
}

function createCookie(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 = style_cookie_name+"="+value+expires+"; path=/";
}

function readCookie(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;
}















$(document).ready(function()
{
	/* Front page slideshow */
	var header = $('#header');
	if (header.hasClass('slideshow'))
	{
		$("#slideshow").slideshow({
			speed: 700, // milliseconds
			autoScrollInterval: 8000, // 8 seconds
			autoScroll: true
		});
	}

	/* Activate strips slideshow */
	$('.small_slideshow').slideshow2({
		animation: 'fade', /* Choose between: random, fall, fade, fadeStrips, fadeRandomStrips, curtain */
		speed: 500, // milliseconds
		autoScrollInterval: 8000,
		autoScroll: true // or true
	});

	/* Activate search form */
	$('.form_search').each(function() {
		$(this).find('input').bind('focus', function() {
			var elm = $(this);
			if (elm.val() == 'Search something...')
				elm.val('');
		}).bind('blur', function() {
			var elm = $(this);
			if (elm.val() == '')
				elm.val('Search something...');
		});
	});

	/* animate navigation */
	$("#nav li").each(function()
	{
		var $this = $(this);
		var sub = $this.find('ul:first');

		$this.hover(function()
		{
			sub.stop().css({overflow:"hidden", height:"auto", display:"none"}).slideDown(200, function()
			{
				$(this).css({overflow:"visible", height:"auto"});
			});
		},
		function()
		{
			sub.stop().slideUp(200, function()
			{
				$(this).css({overflow:"hidden", display:"none"});
			});
		});
	});

	/* Activate tabs */
	$('.tabs').tabs({
		speed: 200, // milliseconds
		startTab : 0,
		tabActiveClass : "tabs_active"
	});

	/* Twitter widget */
	$('#twitter_handle').each(function()
	{
		var tweetsNum = 5; // Number of tweets to show
		var userId = "44438376"; // Your twitter account ID

		var handle = $(this);
		var twitterWidget = $('#twitter_widget');
		twitterWidget.css('opacity', 0);

		var twitterLoaded = false;
		var wait = false;

		function parseDate(date)
		{
			var dateArray = date.split(' ');
	      	return new Date(
	      		Date.parse(dateArray[0] + ', ' + dateArray[2] + ' ' + dateArray[1] + ' ' + dateArray[3] + ' '
	      			+ dateArray[5].substring(0,4))
	        );
		}

		handle.hover(function ()
		{
			var handle = $(this);

			twitterWidget.stop().css('display', 'block').animate({opacity: 1}, 400);

			if (twitterLoaded == false && wait == false)
			{
				wait = true;
				$.ajax({
			        url: "http://twitter.com/statuses/user_timeline/" + userId + ".json?count=" + tweetsNum + "&callback=?",
			        dataType: "json",
			        timeout: 15000,

			        success: function(data)
			        {
						var li = null;
						var ul = $('<ul>');

						for (i = 0; i < data.length; ++i)
						{
							var when = parseDate(data[i].created_at);
							var month = when.getMonth() + 1;
					        	month = (month < 10) ? '0'+month : month;

							li = document.createElement('li');

							// Create html
							li.innerHTML = '<a href="http://twitter.com/' + data[i].user.screen_name
								+ '"><img class="frame left" src="' + data[i].user.profile_image_url
								+ '" alt="no image" /></a>' + '<span class="tweet_date">'
								+ when.getFullYear() +'-'+ month +'-'+ when.getDate() +' at '+ when.getHours()
					            +':'+ when.getMinutes() +':'+ when.getSeconds()
								+ '</span>' + '<span class="tweet_text">' + data[i].text + '</span>';

							ul.append(li);
						}

						ul.insertBefore($('#twitter_widget_inner').children('a:first'));
						twitterLoaded = true;
						wait = false;
			        },

			        error: function()
			        {
			        	wait = false;
			        }
			    });
			}
		},
		function()
		{
			twitterWidget.stop().animate({opacity: 0}, 400, function() {
				$(this).css('display', 'none');
			});
		});
	});
});