(function($) {

$.fn.shorty = function(settings) {
  // define defaults and override with options, if available
  // by extending the default settings, we don't modify the argument
  var config = {
	trunctext		: '...',
	childSelector 	: 'p',
	openText 		: 'will ich lesen',
	closeText 		: 'wieder schliessen',
	qPrefix 		: 'frage_',
	aPrefix 		: 'antw_',
	shortLength	 	: 150
  };


	if(settings) $.extend(config, settings);




// hide all longtext
	$('div[id^='+config.aPrefix+']').hide();

	
// store all long and short text in the element	
	$('div[id^='+config.qPrefix+']').each(function(){
		el = $(this).children(config.childSelector);
		text = el.html();
		el.data('long-text',text);
		shorttext = shortText(text,config.shortLength,config.trunctext);
		el.data('short-text',shorttext);
		el.html(shorttext);
		el.data('visible',0);
	
	});
	
	

// show hide event function bound to links with href #+aPrefix"
	$('a[href^="#'+config.aPrefix+'"]').click( function(event) {
		el = $(event.target).attr('href');
		shortid = el.substr(config.aPrefix.length + 1);
		shortel = $('#'+config.qPrefix+shortid).children(config.childSelector);
		shortel.data('visible') == 0 ? shortel.html(shortel.data('long-text')).data('visible', 1) : shortel.html(shortel.data('short-text')).data('visible', 0);
		$(el).slideToggle();
		if($(this).text() == config.openText){
			$(this).text(config.closeText);
		}else{
			$(this).text(config.openText);
		}
		return false;
	});
	


function shortText(str,len,trunctext){
		if(str.length < len) return str;
		if(str.length > len){
			str = str.substr(0,len);
			str += trunctext;
			return str;
		}
		
		
	}

}

})(jQuery);