$.fn.tooltip = function(options)
{
	var defaults = {
		speed: 200,
		delay: 300,
		attr : false
	};

	var opt = $.extend(defaults, options);
	var _tooltip = this;

	_tooltip.getTip = function() {
		return '<div class="tooltip black"></div>';
	}

	if ($('body').find('.tooltip').length <= 0)
		$("body").append(_tooltip.getTip());

	var tip = $('.tooltip');

	_tooltip.set_timer = function(that) 
	{
		that.sho_tooltip_timer = setInterval("_tooltip.show_tooltip()", defaults.delay);
	}
 
	_tooltip.stop_timer = function(that) 
	{
		clearInterval(that.sho_tooltip_timer);
	}

	_tooltip.set_position = function(that)
	{
		var _element_position = $(that).offset();
		if (_tooltip.autoNS(that) == 'n')
		{
			tip.addClass('top').css({
				top: _element_position.top - (tip.innerHeight() + 5),
				left: _element_position.left + (that.innerWidth() / 2) - (tip.innerWidth() / 2)
			})
		}
		else
		{
			tip.addClass('bottom').css({
				top: _element_position.top + that.innerHeight() + 5 ,
				left: _element_position.left + (that.innerWidth() / 2) - (tip.innerWidth() / 2)
			})
		}
	}

	_tooltip.autoNS = function(that) 
	{
		return $(that).offset().top > ($(document).scrollTop() + $(window).height() / 2) ? 'n' : 's'
	}

	_tooltip.update = function(that) 
	{
		var tooltip_content = ($(that).attr('tooltip') || $(that).attr('ititle'));
		if (opt.attr)
		{
			var tooltip_content = $(that).attr(opt.attr);
		}

		if (tooltip_content == undefined)
 		{
 			_tooltip.destroy();
 			tooltip_content = '';
 		}
 		else
 		{
 			tip.html('<span>'+tooltip_content+'</span>');
			_tooltip.set_position(that);
			tip.removeClass('hide')
 		}

		return tooltip_content;
	}

	_tooltip.destroy = function(that) 
	{
		$(that).off('mouseover mouseleave');
		tip.empty().addClass('hide')
	}
 
	_tooltip.show_tooltip = function()
	{
		tip.removeClass('hide').addClass('show')
	}

	if (typeof options == 'undefined' || typeof options == 'object')
	{
		return _tooltip.each(function()
		{

			var _this = $(this);
			
			
			if (opt.attr)
			{
				_this.attr('tooltip', function() {
					return $(this).attr(opt.attr);
				}).removeAttr(opt.attr)
			}

			var tooltip_content = (_this.attr('tooltip') || _this.attr('ititle'));
	 		
			_this.on('mouseover',function() {
				if (tooltip_content != '' && tooltip_content != undefined)
				{
					tip.html('<span>'+tooltip_content+'</span>');
					_tooltip.set_position(_this);
					_tooltip.show_tooltip();
				}
				
			})

			_this.on('mouseleave',function() {
				tip.removeClass('show top bottom')
			});

			_this.on('update_tooltip',function() {

				tooltip_content = _tooltip.update(_this);
			});
			 
			_this.on('destroy_tooltip',function() {
				_tooltip.update(_this);
			});         	
		});
	}
	else
	{
		switch (options)
		{
			case 'update':
				_tooltip.trigger('update_tooltip')
			break;

			case 'destroy':
			break;
		}
	}
};