sorry headatg function name should also be changed , learn to read the errors , php is language that actualy tells you what is wrong
so here is a small php class for you
error says
Cannot redeclare newheadtag() (previously declared in
which means that class has being used already by different script
and this
mod_myfp_slider.php:113) in
tells you where the class or function is
all you need to do is go to line 113 and rename that function to something else
also rename all instances of that function
class dismissed
p.s:what is your native language