Is it exist grid with move,delete,add for Mozilla 1.4?

[flax]

1)I think that someone need to have grid with move, add and delete features with keys in Mozilla
It seem to be like http://webfx.eae.net/dhtml/grid/usage.html

Can you get a link to something like this for Mozilla

2) Is it possible to write only
<webFX>
<row>
<item>1</item>
<item>1</item>
<item>3</item>
</row>
<row>
<item>1</item>
<item>1</item>
<item>3</item>
</row>
</webFX>


in XUL for grid with moving and not to write Hard script coding at page ?