$(document).ready(function() {
    $(document).pngFix();
    
    var isIE = /MSIE (\d+\.\d+);/.test(navigator.userAgent);
    var ieVer = new Number(RegExp.$1);
    if (isIE && ieVer < 9) {
        $('.rounded-box').corner();
        $('#content-container').corner( "round bottom tr" );
        $('#navigation ul li a').corner( "top" );
    }
});