Tip - jQuery setExpression and IE8

I ran today into a jQuery exception when testing a WebPart on a system with IE8 installed. In the custom WebPart I apply jQuery a.o. to round buttons and grid-headers. I'm utilizing jquery.corner.js for this. It appears that of IE8, Internet Explorer no longer supports dynamic properties. To prevent the Javascript exception, I made a small modification into 'jquery.corner.js' to check on the IE-version:

if (($.browser.msie) && ($.browser.version < 8.0))
    ds.setExpression('width', 'this.parentNode.offsetWidth');