This script is responsible for providing accessibility features by enabling a high-contrast mode for a website's user interface. It dynamically applies CSS changes to enhance readability for users with visual impairments by altering the website's color scheme, usually to darker backgrounds and lighter text. The script includes logic to toggle the mode on and off based on user interaction or existing preferences. It ensures the user's high-contrast preference persists across sessions by setting or reading a dedicated client-side cookie. This helps maintain a consistent user experience by automatically applying their preferred display mode on subsequent visits to the website. The script primarily operates client-side to modify the DOM and manage the state of the high-contrast setting.