/**
 * 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 = "/redesign_03012010/carousel/images/left-enabled.gif";	
	} else {
		leftImage.src = "/redesign_03012010/carousel/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 = "/redesign_03012010/carousel/images/right-enabled.gif";
	} else {
		rightImage.src = "/redesign_03012010/carousel/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.
 **/

function hilite_nav(num)
    {
    
    var id = "nav_button_"+num;
    if (navigator.appName == "Microsoft Internet Explorer")
        { document.getElementById(id).className = "nav_button_hilite"; }
    else
        { document.getElementById(id).setAttribute("class", "nav_button_hilite"); }
    for (i = 1; i <= 9; i++)
        {
        if (i != num)
            {
            id = "nav_button_"+i;
            if (navigator.appName == "Microsoft Internet Explorer")
                { document.getElementById(id).className = "nav_button"; }
            else
                { document.getElementById(id).setAttribute("class", "nav_button"); }
            }
        }
    if (num == 9)
        {
        carousel.scrollTo(1);
        }
    }