Crotte.js (my JS injector for blogger's mobile template)

crotte.js

(function() {
	if (window.crotte_is_loaded) {
		return;
	}
	window.crotte_is_loaded=true

	var crotte_load_script = function(cnd, src, cb) {
		if (cnd) {
			var s = document.createElement('script');
			s.type = 'text/javascript';
			s.async = true;
			s.src=src;
			s.onreadystatechange= function () {
				if (this.readyState == 'complete') cb();
			}
			s.onload=cb;
			var head = document.getElementsByTagName('head')[0];
			head.appendChild(s);
		}
		else {
			cb();
		}
	};
	
	var crotte_load_stylesheet = function(src) {
		if (document.createStyleSheet) {
			document.createStyleSheet(src);
		}
		else {
			var css = $('<link>');
		    css.attr({
		      rel:  "stylesheet",
		      type: "text/css",
		      href: src
		    });
			$("head").append(css);
		}
	};

	crotte_load_script(!window.jQuery, '//code.jquery.com/jquery.min.js', function() {
		(function($){
			$(function() {
				// replace <youtube video="xxx" />
				// with <iframe> embed code 
				$('youtube').replaceWith(function() {
					var elem = $(this);
					var video = elem.attr('video');
					var html = '<iframe class="youtube" src="//www.youtube.com/embed/' + video + '?hd=1&autohide=1&fs=1&iv_load_policy=3&loop=1&rel=0&showsearch=0& showinfo=0&modestbranding=1&enablejsapi=1" allowfullscreen="allowfullscreen" frameborder="0"></iframe>';
					return html;
				});
				
				// replace <gist code="xxx" />
				// with embed code
				var gists = $('gist');
				if (gists.length>0) {
					crotte_load_stylesheet('//barxyzfoocssbaz.googlecode.com/svn/trunk/gist.css');
				}
				gists.each(function() {
					var elem = $(this);
					var code = elem.attr('code');
					$.getJSON(
						'https://gist.github.com/'+code+'.json?callback=?',
						function(data) {
							elem.after(data.div);
						}
					);
				});
				$('.gist-file').css({
					'position':'relative',
					'z-index':'1'
				});
				$('.gist-data').each(function() {
					
				})
				
				
				
				
			});
		})(jQuery);
	});
})();