$.fn.changeFontSize = function() {
	
	var ourText = $('#content_container');
  var currFontSize = ourText.css('fontSize');  
  var finalNum = parseFloat(currFontSize, 10);  
  var stringEnding = currFontSize.slice(-2);
  if($(this).attr('id') == 'large') {
    finalNum *= 1.2;    
  }
  else if ($(this).attr('id') == 'small'){
    finalNum /=1.2;
  }
  ourText.css('fontSize', finalNum + stringEnding);
  
}

$(document).ready(function() {
	
	$('#mtisch_content_container').hide();
		
	$('#mtisch_button').bind('click', function(){ $('#mtisch_content_container').animate({width:'toggle'}, 500)});
	$('.cfontsize').bind('click', function() { $(this).changeFontSize() });
	   
});