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

// jquery.innerfade.js

// Datum: 2008-02-14
// Firma: Medienfreunde Hofmann & Baldes GbR
// Author: 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/
// and Ralf S. Engelschall http://trainofthoughts.org/

 *
 *  <ul id="news"> 
 *      <li>content 1</li>
 *      <li>content 2</li>
 *      <li>content 3</li>
 *  </ul>
 *  
 *  $('#news').innerfade({ 
 *	  animationtype: Type of animation 'fade' or 'slide' (Default: 'fade'), 
 *	  speed: Fading-/Sliding-Speed in milliseconds or keywords (slow, normal or fast) (Default: 'normal'), 
 *	  timeout: Time between the fades in milliseconds (Default: '2000'), 
 *	  type: Type of slideshow: 'sequence', 'random' or 'random_start' (Default: 'sequence'), 
 * 		containerheight: Height of the containing element in any css-height-value (Default: 'auto'),
 *	  runningclass: CSS-Class which the container get’s applied (Default: 'innerfade'),
 *	  children: optional children selector (Default: null)
 *  }); 
 *

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


(function($) {

    $.fn.innerfade = function(options) {
        return this.each(function() {   
            $.innerfade(this, options);
        });
    };

    $.innerfade = function(container, options) {
        var settings = {
        		'animationtype':    'fade',
            'speed':            'normal',
            'type':             'sequence',
            'timeout':          2000,
            'containerheight':  'auto',
            'runningclass':     'innerfade',
            'children':         null,
            'visible':          1,
        };
        if (options)
            $.extend(settings, options);
        if (settings.children === null)
            var elements = $(container).children();
        else
            var elements = $(container).children(settings.children);
        if (elements.length > 1 && settings.visible < elements.length) {
            function sortNumber(a, b)
            {
               return b - a;
            }
            var ht = new Array();
            $('.newsticker li').each(function(i) {
               ht[i] = $(this).innerHeight();
            });
            var max = ht.sort(sortNumber);
            
            var max_height = 0;
            for ( var i = 0; i < settings.visible; i++ ) {
            	max_height += max[i];
            }
            if (settings.containerheight != 'auto')
               max_height = settings.containerheight;
            $(container).css('position', 'relative').css('height', max_height).addClass(settings.runningclass);
            for (var i = 0; i < elements.length; i++) {
                $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
            };
            if (settings.type == "sequence") {
                setTimeout(function() {
                    var current = new Array();
                    for ( var i = 0; i < settings.visible; i++ ){
                       current[i] = i;
                    }
                    $.innerfade.next(elements, settings, current.length, current);
                }, settings.timeout);
                var heights = 0;
                for (var i = 0; i < settings.visible; i++){
                  if(i==0)
                     $(elements[i]).css('top',0);
                  else
                     $(elements[i]).css('top',heights);
                  heights += $(elements[i]).height();
                  $(elements[i]).show();
                }
            } else if (settings.type == "random") {
                for ( var i = 0; i < settings.visible; i++ ){
					    last[i] = Math.floor ( Math.random ( ) * ( elements.length ) );
					 }
					 setTimeout(function() {
					   var current = new Array();
                    do { 
                                 
                                 for ( var i = 0; i < settings.visible; i++ ){
												current[i] = Math.floor ( Math.random ( ) * ( elements.length ) );
											}
										} while ( nomatchingArray(current, last) );             
										$.innerfade.next(elements, settings, current, last);
                }, settings.timeout);
                for (var i = 0; i < last.length; i++){
                   $element[last[i]].show();
                }
				} else if ( settings.type == 'random_start' ) {
								settings.type = 'sequence';
								var current = Math.floor ( Math.random () * ( elements.length ) );
								setTimeout(function(){
									$.innerfade.next(elements, settings, (current + settings.visible) %  elements.length, current);
								}, settings.timeout);
								for (var i = 0; i < settings.visible; i++){
								   if ( i >= elements.length)
								      $(elements[i-elements.length]).show();
								   else
                              $(elements[i]).show();
                        }
						}	else {
							alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
						}
				}else if (settings.visible > elements.length)
				   alert("You may not have more elements visible than their are elements.");
    };

    $.innerfade.next = function(elements, settings, current, last) {
        if (settings.animationtype == 'slide') {
            for (var i = 0; i < last.length; i++){
                   $(elements[last[i]]).slideUp(settings.speed);
            }
            for (var i = 0; i < current.length; i++){
                   $(elements[current[i]]).slideDown(settings.speed);
            }
        } else if (settings.animationtype == 'fade') {
            for (var i = 0; i < last.length; i++){
                   $(elements[last[i]]).fadeOut(settings.speed);
            }
            var heights = 0;
            for (var i = 0; i < settings.visible; i++){
                  if(i==0)
                     $(elements[(i+current) % elements.length]).css('top',0);
                  else
                     $(elements[(i+current) % elements.length]).css('top',heights);
                  heights += $(elements[(i+current) % elements.length]).height();
                  $(elements[(i+current) % elements.length]).fadeIn(settings.speed, function() {
						   removeFilter($(this)[0]);
					   });
            }
        } else
            alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
            
        if (settings.type == "sequence") {      
            for (var i = 0; i < settings.visible; i++){
						   if ( (i + current) >= elements.length)
							      last[i] = i + current - elements.length;
						   else
                           last[i] = i + current;
            }
            
            if ((current + settings.visible) < elements.length) {
                current = current + settings.visible;
            } else {
                current = (current + settings.visible) %  elements.length;
            }
        } else if (settings.type == "random") {
         for ( i = 0; i < settings.visible; i++ ) {
            last[i] = current[i];
            while (current[i] == last[i])
                current[i] = Math.floor(Math.random() * elements.length);
         }
        } else
            alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
        setTimeout((function() {
            $.innerfade.next(elements, settings, current, last);
        }), settings.timeout);
    };

})(jQuery);

// **** remove Opacity-Filter in ie ****
function removeFilter(element) {
	if(element.style.removeAttribute){
		element.style.removeAttribute('filter');
	}
}
function nomatchingArray(array1, array2) {
   if (array1.length < array2.length)
      var maxLength = array2;
   else
      var maxLength = array1;
   for ( var i = 0; i < maxLength; i++){
      if (array1[i]==array2[i])
         return false;
   }
   return true;
}