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

// 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 timeout, globalCur, globalLast, dir;



(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 = $('.rotate_image > div');
	
		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();
			};
			
			dir = 1;
			if ( settings.type == 'sequence' ) {
				globalCur = Math.floor(Math.random ( ) * elements.length);
				if(globalCur == (elements.length-1)) {globalLast = elements.length-2;}
				else if(globalCur == 0) { globalLast = elements.length-1;}
				else { globalLast = globalCur - 1;}
				
				timeout = setTimeout(function(){
					$.innerfade.next(elements, settings, globalCur, globalLast);
				}, settings.timeout);
				$(elements[globalCur]).show();
			} else if ( settings.type == 'random' ) {
				timeout = 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\'');
			}
			$(window).load(function() {
				$(".next").click(function (){ clearTimeout(timeout); $.innerfade.next(elements, settings, globalCur, globalLast); });
				$(".previous").click(function (){ clearTimeout(timeout); $.innerfade.prev(elements, settings, globalCur, globalLast); });
			});
			//$('.rotate_image').css("height", $('.rotating-link').height() + "px");
		}
		
	});
};


$.innerfade = function() {}
$.innerfade.next = function (elements, settings, current, last) {
	if(dir == -1){last=current+1; current = current + 2; dir=1;}
	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 {
			current = 0;
			last = elements.length - 1;
		};
		globalCur = current;
		globalLast = last;
	}	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\'');
	};

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

$.innerfade.prev = function (elements, settings, current, last) {
	
	if(dir == 1){last=current-1; current = current - 2;  dir=-1;}
	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 ) < 0 ) {
			current = elements.length-1;
			last = 0;
		} else {
			last = current;
			current = current - 1;
		};
		
		globalCur = current;
		globalLast = last;
	}	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\'');
	};

	timeout = setTimeout((function(){$.innerfade.next(elements, settings, current, last);}), settings.timeout);
};
})(jQuery);