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/** * A modified version of Stefan Hayden's onJSReady Prototype plugin. * http://www.stefanhayden.com/blog/2008/07/29/javascript-event-onjsready-fires-when-all-js-files-have-loaded/ * * @author John-David Dalton <john.david.dalton[at]gmail[dot]com> * @usage * Prototype.include(['test1.js','test2.js','test3.js']); // array OR * Prototype.include('test1.js', 'test2.js', 'test3.js'); // separate arguments OR * Prototype.include('test1.js,test2.js,test3.js'); // comma separated string OR * * document.observe('scripts:loaded', function(){ dependent_on_external_js() }); */ Prototype.include = Object.extend( function() { var callee = arguments.callee, head = document.getElementsByTagName('HEAD')[0], args = Array.prototype.slice.call(arguments, 0); args._each(function(files) { if (Object.isString(files)) files = files.split(','); callee.total += files.length; files._each(function(file) { head.appendChild( new Element('script', { type: 'text/javascript', src: file.strip() }) ) .observe('readystatechange', function () { if (!this.loaded && this.readyState === 'complete') { this.loaded = true; callee.downloaded++; } }) .observe('load', function () { if (this.loaded) return; this.loaded = true; callee.downloaded++; }); // end observers }); // end files _each }); // end args _each }, { total: 0, downloaded: 0 } ); (function() { var timer; function ready() { if (arguments.callee.done) return; clearInterval(timer); arguments.callee.done = true; document.fire('scripts:loaded'); } timer = setInterval(function() { var i = Prototype.include; if (i.total && i.downloaded === i.total) ready(); }, 10); })();

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