How to show the latest Issue coverImage of each Journal

Well in the /templates/index/site.tpl
I add this line:

`

<a href="{url journal=$journal->getPath() page=“issue” op=“current”}" class=“action”>

`

I dont wanna show the journal image, i wanna put the latest issue cover image of each journal, example i have 10 Journals and each journal had volume, number (issue) and every new number or issue of a journal have a new cover image, what i want to do in the index of the OJS is to show every journal name with the latest issue coverimage of echa one.

what i saw is that in site.tpl iterate from=journals, but how can i made what i want possible if i know the journal-id, with this how get the Current issue coverimage??