All these properties are common to both button weblets except for those indicated as std_image_button_v2 only.
caption
currentrowhfield
currentrownumval
confirm
confirmText
default_button
disabled
formname
height_design
hide_if
left_absolute_image_path
left_image_height
left_relative_image_path
name
on_click_wamname
on_click_wrname
pos_absolute_design
presubmit_js
protocol
right_absolute_image_path
right_image_height
right_relative_image_path
show_in_new_window
submitExtraFields
tab_index
target_window_name
text_class
title
vf_wamevent
width_design