(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
        };
        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);
            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() {
                    $.innerfade.next(elements, 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, settings, current, last);
                }, settings.timeout);
                $(elements[last]).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 + 1) %  elements.length, current);
					}, settings.timeout);
					$(elements[current]).show();
			}	
			//else {
				//alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
			//}
		}
    };

    $.innerfade.next = function(elements, settings, current, last) {
	
		//customizing for claim color
		var claim_color = {
			is_dark: 'motto_bright',
			is_bright: 'motto_dark',
			cycle_hide: 'motto_bright',
			motto_bright: '#eeeeee',
			motto_dark: '#3b3b3b'
		};
        if (settings.animationtype == 'slide') {
            $(elements[last]).slideUp(settings.speed);
            $(elements[current]).slideDown(settings.speed);
        } 
		else if (settings.animationtype == 'fade') {
		
			var container_class = $(elements[current]).attr('class').replace(/^\s+/, '').replace (/\s+$/, '');
			$('#homevisual h1').animate({color: claim_color[ claim_color[container_class] ]}, settings.speed);
			
            $(elements[last]).fadeOut(settings.speed);
            $(elements[current]).fadeIn(settings.speed, function() {
			
							// **** remove Opacity-Filter in ie ****
							function removeFilter(element) {
								if(element.style.removeAttribute){
									element.style.removeAttribute('filter');
								}
							}
							
							removeFilter($(this)[0]);
						});
        } 
		//else
            //alert('Innerfade-animationtype must either be \'slide\' or \'fade\'');
			
        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);
			}
        } 
		//else
            //alert('Innerfade-Type must either be \'sequence\', \'random\' or \'random_start\'');
        
		setTimeout((function() {
            $.innerfade.next(elements, settings, current, last);
        }), settings.timeout);
    };

})(jQuery);