/**
 * Custom button state handler for enabling/disabling button state. 
 * Called when the carousel has determined that the previous button
 * state should be changed.
 * Specified to the carousel as the configuration
 * parameter: prevButtonStateHandler
 **/
var handlePrevButtonState = function(type, args) {

	var enabling = args[0];
	var leftImage = args[1];
	if(enabling) {
		leftImage.src = "images/left-enabled.gif";	
	} else {
		leftImage.src = "images/left-disabled.gif";	
	}
	
};

/**
 * Custom button state handler for enabling/disabling button state. 
 * Called when the carousel has determined that the next button
 * state should be changed.
 * Specified to the carousel as the configuration
 * parameter: nextButtonStateHandler
 **/
var handleNextButtonState = function(type, args) {

	var enabling = args[0];
	var rightImage = args[1];
	
	if(enabling) {
		rightImage.src = "images/right-enabled.gif";
	} else {
		rightImage.src = "images/right-disabled.gif";
	}
	
};


/**
 * You must create the carousel after the page is loaded since it is
 * dependent on an HTML element (in this case 'mycarousel'.) See the
 * HTML code below.
 **/
var carousel; // for ease of debugging; globals generally not a good idea
var pageLoad = function() 
{
	carousel = new YAHOO.extension.Carousel("mycarousel", 
		{
			autoPlay: 3000,
			wrap:true,
			numVisible:        4,
			animationSpeed:    1,
			scrollInc:         1,
			navMargin:         20,			
			size:              10			
			
		}
	);

};

YAHOO.util.Event.addListener(window, 'load', pageLoad);

function stop(){
		carousel.stopAutoPlay()
		a=document.getElementById("carousel-btn")
		a.innerHTML="<a href='javascript:start();'><img src=play.gif></a>";
}

function start(){
		carousel.startAutoPlay(3000)
		a=document.getElementById("carousel-btn")
		a.innerHTML="<a href='javascript:stop();'><img src=pause.gif></a>";
}