When a tool tip pop ups open the screen reader says 'link graphic theme slash image', which refers to the close buttons on the tool tips, but the screen reader is reading the file name as there is no alt text. We need to add alt text to each of the close buttons to read 'close help pop up'.

Also, the screen reader reads the text of a help popup ok, but the user then has to navigate backwards to close the pop up. Please add a button after the text, as an extra means of closing the tool tip. Text for the button should be 'close', and the alt text for the button should read 'close help pop up'.