$('a.fb_dynamic').each(function(){
           var dWidth 	= parseInt($(this).attr('href').match(/width=[0-9]+/i)[0].replace('width=',''));
           var dHeight 	=  parseInt($(this).attr('href').match(/height=[0-9]+/i)[0].replace('height=',''));
			$(this).fancybox({
				'width':dWidth,
				'height':dHeight,
				'autoScale'     	: false,
				'transitionIn'		: 'elastic',
				'transitionOut'		: 'elastic',
				'type'			: 'iframe'
			});
      });

With this code in place Fancybox can be called by simply adding the class fb_dynamic and then specifying the width and height in the URL’s parameters:

Free iPods!!!!

Going one step further, if you need to make the Fancybox call from Flash (another feature not in the API) you can create a simple JavaScript function and make the call from your SWF or AS file:

	/**************************************************************
	Call Fancybox from Flash with a Dynamic width and Height
		@w = integer [width]
     @h = integer [height]
     @u = string [url]
      example funtion call: flashFancybox(500,600,'http://darkcrimson.com')
	***************************************************************/
			function flashFancybox(w,h,u) {
			    var fbflash = $('a#fbflash');
                                fbflash.attr('href', u+ '?width=' + w + '&height=' + h );
				fbflash.trigger('click');
			}
          $(function () {
              // Create dynamic link, change append location to change FB animation start point
	      $('#body').append('  ');
          });