mysql.php -> db_select($table, $column)

Select data from database
Bildeviser.php: get_File_List, get_img_list, check_for_new_img

get_File_List($big, $images):
return array of files names from dir.
get_img_list($dir):
return array of .jpg and .bmp files names from dir.
check_for_new_img($dir):
check for image som are not registered in database and add tem to the
db.