munro

from textwrap import dedent


def wait_until_images_loaded(driver, timeout=30):
    """Waits for all images & background images to load."""
    driver.set_script_timeout(timeout)
    driver.execute_async_script(dedent('''
        // Function to extract URL from CSS 'url()' function
        function extractCSSURL(text) {
            var url_str = text.replace(/.*url\((.*)\).*/, '$1');