jQuery AJAX实现的RSS阅读器

/* * jQuery 1.2.3 - New Wave Javascript * * Copyright (c) 2008 John Resig (jquery.com) * Dual licensed under the MIT (MIT-LICENSE.txt) * and GPL (GPL-LICENSE.txt) licenses. * * $Date: 2008-02-06 00:21:25 -0500 (Wed, 06 Feb 2008) $ * $Rev: 4663 $ */ (function(){if(window.jQuery)var _jQuery=window.jQuery;var jQuery=window.jQuery=function(selector,context){return new jQuery.prototype.init(selector,context);};if(window.$)var _$=window.$;window.$=jQuery;var quickExpr=/^[^<]*(<(.|\s)+>)[^>]*$|^#(\w+)$/;var isSimple=/^.[^:#\[\.]*$/;jQuery.fn=jQuery.prototype={init:function(selector,context){selector=selector||document;if(selector.nodeType){this[0]=selector;this.length=1;return this;}else if(typeof selector=="string"){var match=quickExpr.exec(selector);if(match&&(match[1]||!context)){if(match[1])selector=jQuery.clean([match[1]],context);else{var elem=document.getElementById(match[3]);if(elem)if(elem.id!=match[3])return jQuery().find(selector);else{this[0]=elem;this.length=1;return this;}else 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