I found this code from here: http://www.cssportal.com/form-elements/text-box.htm But the problem is you can still see the rectangular shape of the textbox whenever you click inside it. What would be the fix for this? So that the highlight will go with the image with rounded corners

/* Rounded Corner */
.tb5 {
    background: url(images/rounded.gif) no-repeat top left;
    height: 22px;
    width: 230px;
}
.tb5a {
    border: 0;
    width:220px;
    margin-top:3px;
}