(function($) {

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

$.parav = function(container, options) {
	var settings = {
		'animationtype': 'fade',
		'speed':'normal',
		'type':'sequence',
		'timeout':2000,
		'containerheight':'auto',
		'runningclass':'parav',
		'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() {
			$.parav.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 );             
				$.parav.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(){
				$.parav.next(elements, settings, (current + 1) %  elements.length, current);
			}, settings.timeout);
			$(elements[current]).show();
		}
	}
};

$.parav.next = function(elements, 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]);
		});
	}else{
		$(elements[last]).fadeOut(settings.speed);
		$(elements[current]).slideDown(settings.speed, function() {
			removeFilter($(this)[0]);
		});
	}
	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() {
	$.parav.next(elements, settings, current, last);
	}), settings.timeout);
};
$.fn.stretcher = function(mw) {
	return this.each(function() {
		while($(this).innerWidth() > mw){
			var size = $(this).css('font-size');
			size = parseInt(size.replace('px','')) - 2;
			$(this).css('font-size',size+'px');
		}
	});
};


})(jQuery);

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