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i < ca.length; i++)\r\n        {\r\n            let c = ca[i];\r\n            while (c.charAt(0) === \" \")\r\n            {\r\n                c = c.substring(1, c.length);\r\n            }\r\n            if (c.indexOf(nameEq) === 0)\r\n            {\r\n                return c.substring(nameEq.length, c.length);\r\n            }\r\n        }\r\n        return null;\r\n    }\r\n\r\n    function createCookie(name: string, value: string, days: number)\r\n    {\r\n        let expires: string;\r\n\r\n        if (days)\r\n        {\r\n            const date = new Date();\r\n            date.setTime(date.getTime() + (days * 24 * 60 * 60 * 1000));\r\n            expires = `; expires=${date.toUTCString()}`;\r\n        }\r\n        else\r\n        {\r\n            expires = \"\";\r\n        }\r\n\r\n        document.cookie = name + \"=\" + value + expires + \"; path=/\";\r\n    }\r\n\r\n    function getPreferredStyleSheet(): string | null\r\n    {\r\n        let i: number;\r\n        let a: HTMLLinkElement;\r\n        for (i = 0; (a = document.getElementsByTagName(\"link\")[i]); i++)\r\n        {\r\n            const relAttr = a.getAttribute(\"rel\");\r\n            if (relAttr != null &&\r\n                relAttr.indexOf(\"style\") !== -1 &&\r\n                relAttr.indexOf(\"alt\") === -1 &&\r\n                a.getAttribute(\"title\"))\r\n            {\r\n                return a.getAttribute(\"title\");\r\n            }\r\n        }\r\n        return null;\r\n    }\r\n\r\n    function getActiveStyleSheet(): string | null\r\n    {\r\n        let i: number;\r\n        let a: HTMLLinkElement;\r\n        for (i = 0; (a = document.getElementsByTagName(\"link\")[i]); i++)\r\n        {\r\n            const relAttr = a.getAttribute(\"rel\");\r\n            if (relAttr != null && relAttr.indexOf(\"style\") !== -1 && a.getAttribute(\"title\") && !a.disabled)\r\n            {\r\n                return a.getAttribute(\"title\");\r\n            }\r\n        }\r\n        return null;\r\n    }\r\n\r\n    export function SetActiveStyleSheet(title: any): void\r\n    {\r\n        let i: number;\r\n        let a: HTMLLinkElement;\r\n        for (i = 0; (a = document.getElementsByTagName(\"link\")[i]); i++)\r\n        {\r\n            const relAttr = a.getAttribute(\"rel\");\r\n            if (relAttr != null && relAttr.indexOf(\"style\") !== -1 && a.getAttribute(\"title\"))\r\n            {\r\n                a.disabled = true;\r\n                if (a.getAttribute(\"title\") === title)\r\n                {\r\n                    a.disabled = false;\r\n                }\r\n            }\r\n        }\r\n    }\r\n\r\n    export function StylesheetOnLoad(): void\r\n    {\r\n        const cookie = readCookie(\"style\");\r\n        const title = cookie\r\n            ? cookie\r\n            : getPreferredStyleSheet();\r\n        StyleSwitcher.SetActiveStyleSheet(title);\r\n    }\r\n\r\n    export function StylesheetOnUnload(): void\r\n    {\r\n        const sheet = getActiveStyleSheet();\r\n        const sheetName = sheet != null ? sheet : \"\";\r\n        createCookie(\"style\", sheetName, 365);\r\n    }\r\n}\r\n\r\nwindow.addEventListener(\"load\", DBS.StyleSwitcher.StylesheetOnLoad);\r\nwindow.addEventListener(\"unload\", DBS.StyleSwitcher.StylesheetOnUnload);"]}