var _intervalTime = 4000;
var _shouldPlay = false;
var _intSlider = 0;


function init() {
	if(_shouldPlay) return;
	
	$('#slide-images li').hide();
	
	if( $('#slide-images li').length < 2) {
		_shouldPlay = false;
		$('#slide-images li:first').fadeIn(2000);
	} else {
		_shouldPlay = true;
		slideSwitch();
		_intSlider = window.setInterval( "slideSwitch()" , _intervalTime );
	}
		
}

function slider_stop(){
	_intSlider = window.clearInterval(_intSlider);
	_shouldPlay = false;
}

function slideSwitch() {
	if(!_shouldPlay) return;
		
	var $active = $('#slide-images li.active');
	
	if( $active.length == 0 ) $active = $('#slide-images li:last');

	var $next = $active.next().length ? $active.next() : $('#slide-images li:first');
	
	$active.removeClass('active');
	$next.addClass('active');
	
	$active.fadeOut(2000);
	$next.fadeIn(2000);	

}