context: function findDynamicRule (selector){    var rules = frames[0].document.styleSheets[1].cssRules;        if (selector instanceof RegExp)        fun = "search";    else        fun = "indexOf";        for (var i = 0; i < rules.length; ++i)    {        var rule = rules.item(i);        if (rule.selectorText && rule.selectorText[fun](selector) == 0)            return {sheet: frames[0].document.styleSheets[1], rule: rule,                    index: i};    }        return null;}
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