if (/MSIE (\d+\.\d+);/.test(navigator.userAgent)) { //test for MSIE x.x;
    var ieversion = new Number(RegExp.$1)
    if (ieversion >= 7) {
        setcorners();
    }
}
else {
    setcorners();
}

function setcorners() {
    $(function() {

        settings = {
            tl: { radius: 5 },
            tr: { radius: 5 },
            bl: { radius: 5 },
            br: { radius: 5 },
            antiAlias: true,
            autoPad: true,
            validTags: ["div"]
        }

        $('.rounded').corner(settings);

    }); ;
}