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

// 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) {
        fadetimer = null;
        elements  = null;
        paused = false;
        
        current = 0;
        last = 0;
        
        settings = {
        	'animationtype':    'fade',
            'speed':            'normal',
            'type':             'sequence',
            'timeout':          2000,
            'containerheight':  'auto',
            'runningclass':     'innerfade',
            'children':         null,
            'divslidermenu':    "slider-remote"
        };
        
        
        return this.each(function() {   
            $.innerfade(this, options);
        });
        
        
    };

    $.innerfade = function(container, options) {
        if (options) {
            $.extend(settings, options);
        }
        
        if (settings.children === null)
            elements = $(container).children(); //var elements = $(container).children();
        else
            elements = $(container).children(settings.children); //var elements = $(container).children(settings.children);
        
        $(container).find("li").each( function(e) {
            var sliderRemote = $(this).find("." + settings.divslidermenu + ":first");
            //sliderRemote.append('<a class="slide-number" href="javascript:;">&gt;</a>');
      		for(i=0; i<elements.length; i++)
      		{
      		  
      			var a = document.createElement("a");
      			$(a).attr("href", "javascript:;");
      			$(a).addClass("slide-number");
      			
      			//\  HACK
      			if(e == i) {
      				$(a).addClass("active");
      			}
      			//\ /HACK
      			$(a).text( (i+1) );
      			
      			$(a).click(function () {
      			   clearTimeout(fadetimer);
     			   
      			   var clickon = parseInt($(this).text()) - 1;
      			   $.innerfade.goto(clickon, current);

      		    });	
      						
      			sliderRemote.append(a);
      		}
      		sliderRemote.append('<div class="clearfix"></div>');
        });
        
        if (elements.length > 1) {
            $(container).css('position', 'relative').css('height', settings.containerheight).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") {
                fadetimer = setTimeout(function() {
                    $.innerfade.next(1, 0);
                }, settings.timeout);
                $(elements[0]).show();
            } else if (settings.type == "random") {
            		last = Math.floor ( Math.random () * ( elements.length ) );
                fadetimer = setTimeout(function() {
                    do { 
							current = Math.floor ( Math.random ( ) * ( elements.length ) );
						} while (last == current );             
					$.innerfade.next(current, last);
                }, settings.timeout);
                
                $(elements[last]).show();
						} else if ( settings.type == 'random_start' ) {
								settings.type = 'sequence';
								current = Math.floor ( Math.random () * ( elements.length ) );
								fadetimer = setTimeout(function(){
									$.innerfade.next((current + 1) %  elements.length, current);
								}, settings.timeout);
								$(elements[current]).show();
						}	else {
							alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
						}
				}
    };

    $.innerfade.next = function( c, l) {
        
        $.innerfade.goto(c, l);
        
        if (settings.type == "sequence") {
            if ((c + 1) < elements.length) {
                c = c + 1;
                l = c - 1;
            } else {
                c = 0;
                l = elements.length - 1;
            }
        } else if (settings.type == "random") {
            l = c;
            while (c == l)
                c = Math.floor(Math.random() * elements.length);
        } else
            alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
        fadetimer = setTimeout((function() {
            $.innerfade.next(c, l);
        }), settings.timeout);
        
    };
    
    $.innerfade.goto = function(c, l) {
        
        if (settings.animationtype == 'slide') {
            $(elements[l]).slideUp(settings.speed);
            $(elements[c]).slideDown(settings.speed);
        } else if (settings.animationtype == 'fade') {
            $(elements[l]).fadeOut(settings.speed);
            $(elements[c]).fadeIn(settings.speed, function() {
				removeFilter($(this)[0]);
			});
        } else alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
        
        current = c;
    };


})(jQuery);

// **** remove Opacity-Filter in ie ****
function removeFilter(element) {
	if(element.style.removeAttribute){
		element.style.removeAttribute('filter');
	}
}