/* =========================================================

// jquery.innerfade.js

// Datum: 2007-01-29
// Firma: Medienfreunde Hofmann & Baldes GbR
// Autor: Torsten Baldes
// Mail: t.baldes@medienfreunde.com
// Web: http://medienfreunde.com

// based on the work of Matt Oakes http://portfolio.gizone.co.uk/applications/slideshow/

// ========================================================= */

var timer_t;

(function($) {

$.fn.innerfade = function(options) {

   this.each(function(){                 var settings = {
           animationtype: 'fade',
           speed: 'normal',
           timeout: 2000,
           type: 'sequence',
           containerheight: 'auto',
           runningclass: 'innerfade'
       };
             if(options)
           $.extend(settings, options);
             var elements = $(this).children();
         if (elements.length > 1) {
                 $(this).css('position', 'relative');
             $(this).css('height', settings.containerheight);
           $(this).addClass(settings.runningclass);
                     for ( var i = 0; i < elements.length; i++ ) {
               $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute');
               $(elements[i]).hide();
           };
                 if ( settings.type == 'sequence' ) {
               timer_t = setTimeout(function(){
                   $.innerfade.next(elements, settings, 1, 0);
               }, settings.timeout);
               $(elements[0]).show();
           } else if ( settings.type == 'random' ) {
               setTimeout(function(){
                   do { current = Math.floor ( Math.random ( ) * ( elements.length ) ); } while ( current == 0 )
                   $.innerfade.next(elements, settings, current, 0);
               }, settings.timeout);
               $(elements[0]).show();
           }    else {
               alert('type must either be \'sequence\' or \'random\'');
           }
                 }
         });
};


$.innerfade = function() {}
$.innerfade.next = function (elements, settings, current, last) {

   if ( settings.animationtype == 'slide' ) {
       $(elements[last]).slideUp(settings.speed, $(elements[current]).slideDown(settings.speed));
   } else if ( settings.animationtype == 'fade' ) {
       $(elements[last]).fadeOut(settings.speed);
       $(elements[current]).fadeIn(settings.speed);
   } else {
       alert('animationtype must either be \'slide\' or \'fade\'');
   };
     if ( settings.type == 'sequence' ) {
       if ( ( current +1 ) < elements.length ) {
           current = current +1;
           last = current - 1;
       } else {
           clearTimeout(timer_id);
       };
   }    else if ( settings.type == 'random' ) {
       last = current;
       while (    current == last ) {
           current = Math.floor ( Math.random ( ) * ( elements.length ) );
       };
   }    else {
       alert('type must either be \'sequence\' or \'random\'');
   };
   setTimeout((function(){$.innerfade.next(elements, settings, current, last);}), settings.timeout);
};
})(jQuery);