how to stop marquee on mouse over and how to slow speed of marquee please help thanks Also, please consider keeping the link back to this website - if you do it will be very much appreciated! As with any CSS property, if a browser doesn't support a proprietary extension, it will simply ignore it. This time the marquee slows down when the mouse button is pressed and it speeds up again when the mouse is released. The Marquee scrollamount attribute in HTML is used to set the amount of scrolling at each interval in pixels. Continuous scrolling image HTML Marquee Image « Previous; Next » Definition. To slow the marquee to normal speed, we use the onmouseout event, and simply change the scrollamount back to its original value (i.e. Using CSS: If you're on a Mac, download the latest version of webkit. Sets the width in pixels between successive displays of the scrolling text in a marquee. An HTML marquee is a scrolling element of text shown either horizontally across or vertically down your web-page. HTML5 marquee tag implementation in pure CSS3. HTML