$string .= $cgi->textfield(
        -name      => 'name',
        -default   => 'def',
        -override  => 0,
        -size      => 20,
        -maxlength => 120, 
        -onfocus   => "this.value = ''",
        -onblur    => "this.value = 'def'",
        -onchange  => "delete onfocus, delete onblur", #how?
    );