Hi Jens,
the links don't have an ID or a CLASS of their own, but you can adress them using contextual selectors. to be shure to overwrite the inline styles use the property "!important". (When I am searching for the right description I'm using extreme values and I address two different properties if one of them doesn't respond in this context):
#block_calendar_month .sideblockmain .cal_controls a:link {
font-size:3em !important;
color:#FF00FF;
}
firefox with its "DOM Inspector" and the "WEB Developer" extension is a handy tool to get these informations. Below you see a screendump of the CLASS and ID names the "WEB Developer" extension shows.
Good luck
Urs



