function textAreaOnFocus (self) {
    self.style.backgroundImage = "url('res/images/textAreaBackgroundFocus.gif')";
}

function textAreaOnBlur (self) {
    self.style.backgroundImage = "url('res/images/textAreaBackground.gif')";
}

function inputOnFocus (self) {
    self.style.backgroundImage = "url('res/images/inputTextBackgroundFocus.gif')";
}

function inputOnBlur (self) {
    self.style.backgroundImage = "url('res/images/inputTextBackground.gif')";
}