/*****
Version 1.0
Last Revision: 04/27/2009
Greg Walters
*****/


function setCookie( name, value, expires, path, domain, secure )
{
    // set time, it's in milliseconds
    var today = new Date();
    today.setTime( today.getTime() );
    
    /*
    if the expires variable is set, make the correct
    expires time, the current script below will set
    it for x number of days, to make it for hours,
    delete * 24, for minutes, delete * 60 * 24
    */
    if ( expires )
    {
        expires = expires * 1000 * 60 * 60 * 24; // days
    }
    var expires_date = new Date( today.getTime() + (expires) );
    
    document.cookie = name + "=" +escape( value ) +
    ( ( expires ) ? ";expires=" + expires_date.toGMTString() : "" ) +
    ( ( path ) ? ";path=" + path : "" ) +
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ( ( secure ) ? ";secure" : "" );
}

// with this test document.cookie.indexOf( name + "=" );
function getCookie( check_name ) 
{
	// first we'll split this cookie up into name/value pairs
	// note: document.cookie only returns name=value, not the other components
	var a_all_cookies = document.cookie.split( ';' );
	var a_temp_cookie = '';
	var cookie_name = '';
	var cookie_value = '';
	var b_cookie_found = false; // set boolean t/f default f

	for ( i = 0; i < a_all_cookies.length; i++ )
	{
		// now we'll split apart each name=value pair
		a_temp_cookie = a_all_cookies[i].split( '=' );


		// and trim left/right whitespace while we're at it
		cookie_name = a_temp_cookie[0].replace(/^\s+|\s+$/g, '');

		// if the extracted name matches passed check_name
		if ( cookie_name == check_name )
		{
			b_cookie_found = true;
			// we need to handle case where cookie has no value but exists (no = sign, that is):
			if ( a_temp_cookie.length > 1 )
			{
				cookie_value = unescape( a_temp_cookie[1].replace(/^\s+|\s+$/g, '') );
			}
			// note that in cases where cookie is initialized but no value, null is returned
			return cookie_value;
			break;
		}
		a_temp_cookie = null;
		cookie_name = '';
	}
	if ( !b_cookie_found )
	{
		return null;
	}
}

// this deletes the cookie when called
function deleteCookie( name, path, domain ) 
{
    if ( getCookie( name ) ) document.cookie = name + "=" +
    ( ( path ) ? ";path=" + path : "") +
    ( ( domain ) ? ";domain=" + domain : "" ) +
    ";expires=Thu, 01-Jan-1970 00:00:01 GMT";
}

function cookiesEnabled()
{
    setCookie( 'test', 'none', '', '/', '', '' );
    if (!getCookie('test'))
    {
        return false;
    }
    deleteCookie('test', '/', '');
    return true;
}

function addToCart(item)
{
    if (!cookiesEnabled()) {alert("Cookies must be enabled");}
    else
    {
        var answer = confirm('Add ' + item + ' to Cart?');
        if (answer)
        {
            var cartImages = getCookie('cartImages');
            if (cartImages == null || cartImages == '') 
            {
                cartImages = item;
            }
            else
            {
                var splitImages = cartImages.split(':');
                for (i=0; i<splitImages.length; i++)
                {
                    if (item == splitImages[i]) return;
                }
                cartImages = cartImages + ":" + item;
            }
            setCookie('cartImages', cartImages, '', '/');
        }
    }
}

function removeFromCart(item)
{
    if (!cookiesEnabled()) {alert("Cookies must be enabled");}
    else
    {
        var answer = confirm('Remove ' + item + ' from Cart?');
        if (answer)
        {
            var cartImages = getCookie('cartImages');
            if (cartImages == null) 
            {
                return true;
            }
            else
            {
                var splitImages = cartImages.split(':');
                var seperator = '';
                cartImages = '';
                for (i=0; i<splitImages.length; i++)
                {
                    if (item != splitImages[i]) 
                    {
                        cartImages = cartImages + seperator + splitImages[i];
                        seperator = ':';
                    }
                }
            }
            setCookie('cartImages', cartImages, '', '/');
            return true;
        }
        return false;
    }
}

function emptyCart(item)
{
    if (!cookiesEnabled()) {alert("Cookies must be enabled");}
    else
    {
        var answer = confirm('Empty Shopping Cart?');
        if (answer)
        {
            var cartImages = getCookie('cartImages');
            if (cartImages == null) 
            {
                return;
            }
            setCookie('cartImages', '', '', '/');
        }
    }
}