Element.EmbedShell.js

// http://mooshell.net/tbdZW/
(function(){

	var parseDimensions = function(element){
		var array = element.get('class').match(/mooshell:[0-9]+:?([0-9]+)?/)[0].split(':');
		var dimensions = { height: array[1] };
		dimensions.width = (array[2]) ? dimensions.width = array[2] : '100%';
		return dimensions;
	};

	Element.implement({

		embedShell: function(dimensions){
			var dimensions = (dimensions) ? dimensions : parseDimensions(this);
			var iframe = new Element('iframe',{
				'width': dimensions.width,
				'height': dimensions.height,
				'src': this.get('href')
			});
			iframe.inject(this,'after');
			this.destroy();
			return iframe;
		}

	});
    
})();

// usage

// <a href="http://mooshell.net/rpflo/928fj2" class="mooshell:100:600">MooShell Demo</a>
$('link').embedShell();
​