space not being deleted / asciiart-tab

[Bamboori]

actually i wanted to show off my latest ascii art around here, but i failed cause of
this.
in fact, there are bunches of space's before that "this". but they are getting deleted. now i could post my art in formatted code, but then i got the problem that i can't change the font or font size.
so basically i am asking for a tab like following:

[ascii][/ascii] / [space][/space] = space being displayed

OR

simple removing the space-deleting function.

is one of that possible?