I was worried about that the tooltip is displayed with a very small box if the content is empty.

If you do not want that the Tooltip show up if content is empty.

Add in the function handle(event) above the comment:

show helper, either with timeout or on instant

following code:

dont show helper if helper body is empty

if($(helper.body).html() == "")

{

return;

}

if you have a trim function, better to add this to the html() function.

best regards,

Christian