utf-8 and ISO-8859-1 issue

[webdev]

I am working with multi languages in my site.
Currently i am using European languages like Danish, Sweden, and German etc.
And iam using below meta tag for showing the European special characters:
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />


I need to include Korean language in my site. So, need to user utf-8 to show the korean charaters.
I am using the below meta tag:
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />

Now i need to show both European and Korean language in one page.
Which charset need to use for this issue?

Thanks in advance...