It is possible to insert an lj-cut within your table safely without breaking the HTML of the page. It necessitates putting the "lj-cut" tag at the beginning of the first cell of the first row that you wish to be hidden. The following code is an example for a two-column table with "n" cells:
So, let me know if this breaks your friends page, okay?
|Visible cell 1||Visible cell 2|
|Cut cell 1||Cut cell 2|
|Cut cell n-1||Cut cell n|