(function($) {
 
   $.fn.scaleFont = function(settings) {
     if (settings) $.extend(settings);
 
     this.each(function() {
			var view_height = $(window).height();
			var size_ratio = view_height / 700;
			var standard_font_size = 10;
			var font_size = Math.round(size_ratio * standard_font_size / 0.5) * 0.5;
			if(font_size > 12) { font_size = 12; }
			if(font_size < 8) { font_size = 8; }
			
			$('body').css('font-size', font_size+'px');
			
     });
 
     return this;
	
 
   };
 
 })(jQuery);