TreeGrid Height 100% right click issue

Hi,
I have set the height of the TreeGrid to 100% and added a right click context menu to it.
However the bottom of my table after my rows of data has the default right click for the browser.
Is there a way of adding a right click to after my rows but still within my table?
I currently have:

menu = new dhtmlXMenuObject("objbox"); menu.setIconsPath(""); menu.renderAsContextMenu();
objbox being the div around my table.

Thanks for any help

Nic

Try to use following technique dhtmlx.com/docs/products/dht … _menu.html

Note, it impossible to block default browser context menu in Opera.