$(document).ready (function(){
    if($.browser.msie && $.browser.version=="6.0"){

    }else{
           $('#navMenu ul a.this').cornerz({radius:3, corners:"tr tl"});
           $('#navMenu ul a.none').cornerz({radius:3, corners:"tl tr bl br"});
           $('#regMenu ul a.this').cornerz({radius:3, corners:"tr tl"});
           $('#regMenu ul a.none').cornerz({radius:3, corners:"tl tr bl br"});
    }
});