Thank you for wallpost mate, appreciate that and your answer.
I read it yeasterday by email while I was offline and this morning (LMT), the first thing I did was to search this function but there was no chance, my mouse is a non-programmable one. I also tried to find any additional features of Maxthon, there are but the function space for the right click is not among those on the list and I think that can not be changed.
Thank you for the support.
David.