Marko,
I examined your 'problem page';
http://www.tarjeteroexpress.es/indice-de-actividades/abogados/malaga/fuengirola/fuengirola-abogado-antonia-berrocal.htmlagain today with Firefox v3.6.8, Internet Explorer 8 v8.0.6001.18702, and Google Chrome v5.0.375.127, all on Windows XP Professional.
Again, the Google Map appeared to be displayed correctly and the page appeared to be the same in all 3 browsers.
So, unfortunately I cannot reproduce your problem.
I note that this forum is detecting that you are using Internet Explorer 7 when you access it.
I tried to understand what the 'IC' at the end of your Internet Explorer 8 version number means.
If I understand what
http://support.microsoft.com/kb/969393 is telling me, it would appear that you have a customized version of Internet Explorer 8, customized by an Internet Content Provider (whatever that means).
Have you tried using another computer with a non-IC version of IE8 to see if the problem is limited to your computer?
Because I cannot reproduce your problem, I do not know what more I can do to help.
Regards - Mark