CurvyCorners Error

Question

Hi Guys,

I am using this code with http://www.curvycorners.net/instructions/. Everytime I use it I seem to be getting

var curvyCornersVerbose = false;

Event.observe(window, 'load', function() {
    var settings = {
      tl: { radius: 5 },
      tr: { radius: 5 },
      bl: { radius: 5 },
      br: { radius: 5 },
      antiAlias: true
    }
    var divObj = document.getElementById("header");
    curvyCorners(settings, divObj);

});

"Object doesn't support this property or method" in IE from the Scriptalicous library. The corners work but this IE error doesn't make sense ?

Any ideas ?