function pe_next()
{
    	if (inTransition)
		return false;
	inTransition = true;
        var oldId = CURRENT_ID;
        if (CURRENT_ID == (TOTAL_ITEMS - 1))
        {
            $(".image").hide();
            CURRENT_ID = 0;
        }	
	else
		CURRENT_ID++;

        $('#i_'+ oldId).fadeOut('fast',function()
        {
            $('#i_'+CURRENT_ID).fadeIn('fast',function()
                {
                    inTransition = false;
                });
        });
	
}

function pe_previous()
{
	if (inTransition)
		return false;
	inTransition = true;

        var oldID = CURRENT_ID;

	if (CURRENT_ID == 0)
        {
            CURRENT_ID = TOTAL_ITEMS - 1;
            $(".image").hide();
        }
	else
            CURRENT_ID--;
	
        $('#i_'+oldID).fadeOut('fast',function()
        {
            $('#i_'+CURRENT_ID).fadeIn('fast',function(){inTransition = false;});
        });


}