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

// jquery.slideshow.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 ,
 *	  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)
 *  }); 
 *
 
 // Modified : 2009-03-30  by  Romain Vilminot

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


(function($) {

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

    $.innerfade = function(container, options) {
        var settings = {
        	'animationtype':    'fade',   // "fade" or "slide"   only
            'speed':            'normal',
            'type':             'sequence', // "sequence" or "random" only
            'timeout':          6000,
            'containerheight':  'auto',
            'runningclass':     'innerfade',
            'children':         null
        };
        if (options) {
            $.extend(settings, options);
		}
		
        if (settings.children === null) {
            var elements = $(container).children();
        }else {
            var elements = $(container).children(settings.children);
		}
		
		    
		
  
        if (elements.length > 1) {
           	
			$(container).css('position', 'relative').css('height', settings.containerheight).addClass(settings.runningclass);
       
	   
			var totalslidenums = '';		
			
			for (var i = 0; i < elements.length; i++) {
                $(elements[i]).css('z-index', String(elements.length-i)).css('position', 'absolute').hide();
				var curslidenum = '<li><a href="#" onclick="return false;">' + (i + 1) + '</a></li>';
				totalslidenums = totalslidenums + curslidenum;
            };
			
			  
			$(elements).css('visibility','visible');
		
			$(elements[0]).before('<ul id="slidenumbers">' + totalslidenums + '</ul>');
			
			var allslides = $('#slidenumbers').children();
			
			
			bizzy = setTimeout(function() {
				$.innerfade.next(elements, allslides, settings, 1, 0);
			}, settings.timeout);

			$(elements[0]).show();
			$(allslides[0]).children().addClass('curnum');
			
			$('#slidenumbers a').click(function() {
			
				clearTimeout(bizzy);
				
				var q = $(this).text() - 1;

				if ((q + 1) < elements.length) {
					current = q + 1;
					last = q;
				} else {
					current = 0;
					last = elements.length - 1;
				}

				
				if (settings.animationtype == 'slide') {
					$(elements).slideUp(settings.speed);
					$(elements[q]).slideDown(settings.speed);
				} else if (settings.animationtype == 'fade') {
					$(elements).fadeOut(settings.speed);
					$(elements[q]).fadeIn(settings.speed, function() {
								removeFilter($(this)[0]);
					});
				} 
		
				
				$(allslides).children().removeClass('curnum');
				$(allslides[q]).children().addClass('curnum');
				
				bizzy = setTimeout(function() {
					$.innerfade.next(elements, allslides, settings, current, last);
				}, settings.framepause);

			});
			
			
			
            if (settings.type == "sequence") {
                setTimeout(function() {
                    $.innerfade.next(elements, allslides, settings, 1, 0);
                }, settings.timeout);
                $(elements[0]).show();
            } else if (settings.type == "random") {
            	var last = Math.floor ( Math.random () * ( elements.length ) );
                setTimeout(function() {
                    do { 
												current = Math.floor ( Math.random ( ) * ( elements.length ) );
						} while (last == current );             
										$.innerfade.next(elements, allslides, settings, current, last);
                }, settings.timeout);
                $(elements[last]).show();
			} 
		}
		else{
		  // 1 OP uniquement
			$(container).css("margin-left","auto");
		
		}
    };

    $.innerfade.next = function(elements, allslides, 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);
            $(elements[current]).fadeIn(settings.speed, function() {
							removeFilter($(this)[0]);
			});
        } 
		
		$(allslides[current]).children().addClass('curnum');
		$(allslides[last]).children().removeClass('curnum');
		
		
        if (settings.type == "sequence") {
            if ((current + 1) < elements.length) {
                current = current + 1;
                last = current - 1;
            } else {
                current = 0;
                last = elements.length - 1;
            }
        } else if (settings.type == "random") {
            last = current;
            while (current == last)
                current = Math.floor(Math.random() * elements.length);
        } 
		
        setTimeout((function() {
            $.innerfade.next(elements, allslides, settings, current, last);
        }), settings.timeout);
    };

})(jQuery);

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