they call them hackathons for a reason

gistfile1.js

$('div.feed-item').click(function() {
	var url = $(this).attr('data-url');
	var $veil = $('<div style="width: 100%; height: 100%; position: absolute; top: 0; left: 0; z-index: 99; background-color: rgba(0,0,0,0.5);">');
	var $frame = $('<iframe style="position: absolute; background-color: #fff; box-shadow: 0 0 3em #333; z-index: 100;">');
	$frame.attr('src', url);
	var $body = $('body');
	var w = $body.width() * 0.8;
	var h = $body.height() * 0.8;
	$frame.css('width', w);
	$frame.css('height', h);
	$frame.css('top', $body.height() * 0.1);
	$frame.css('left', $body.width() * 0.1);
	$body.append($veil);
	$body.append($frame);
	var removeFrame = function(e) {
		if (e.keyCode === 27) {
			$veil.remove();
			$frame.remove();
		}
	}
	$(document).keyup(removeFrame);
});