JomLand ModBox can be set to display on difference frequency, once per visit, day, week and so. JomLand ModBox is J1.6/J1.7 native plugin.
* Select Module by Id.
* Setting lighbox Width/Height from Module setting (don't need to change css).
* Set display frequency: once per visit, day, week,month or only once per visitor.
* Ability to set popup module title tag.