function EnableCombobox() {
    this.disabled = false;
    AppendCssClassToControl(this, "input");    
    RemoveCssClassFromControl(this, "disabled_combobox");    
}

function DisableCombobox() {
    this.disabled = true;
    AppendCssClassToControl(this, "disabled_combobox");
    RemoveCssClassFromControl(this, "input");    
}

function RegisterComboBoxDisableBehavior(id) {
    
    var input = document.getElementById(id);

    input.EnableControl = EnableCombobox;
    input.DisableControl = DisableCombobox;
}