You require malayalam font "MLW-TTKarthika"
If you can't read the content of this site properly,most probably
the reguired malayalam font(MLW-TTKarthika) is not loaded in your system. Please check whether MLW-TTKarthika
is loaded in your system. If not please load it.
font available here
Instructions to load in Ubuntu Linux:
Open the command window and Copy the downloaded font into the font
# cp [fonts path] /usr/share/fonts/truetype