.htaccess help please

[aebstract]

Here is my .htaccess:

DirectoryIndex /splash/index.html /splash/index.php index.pl index.php index.html
RewriteEngine On

RewriteBase /

RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([[:alnum:]_]+)/$ /index.php?page=$1 [NC,L]
RewriteRule ^([[:alnum:]_]+)/([[:alnum:]]+)/$ /index.php?page=$1&var1=$2 [NC,L]
RewriteRule ^([[:alnum:]_]+)/([[:alnum:]]+)/([[:alnum:]]+)/$ /index.php?page=$1&var1=$2&var2=$3 [NC,L] 
RewriteRule ^([[:alnum:]_]+)/([[:alnum:]]+)/([[:alnum:]]+)/([[:alnum:]]+)/$ /index.php?page=$1&var1=$2&var2=$3&var3=$4 [NC,L] 
RewriteRule ^([[:alnum:]_]+)/([[:alnum:]]+)/([[:alnum:]]+)/([[:alnum:]]+)/([[:alnum:]]+)/$ /index.php?page=$1&var1=$2&var2=$3&var3=$4&var4=$5  [NC,L] 

 

The only thing important at this point is the top line: DirectoryIndex /splash/index.html /splash/index.php index.pl index.php index.html

 

I have two main websites running out of one domain. domain.net and domain.net/directory

I am needing to have it so that when you go to domain.net you get the splash screen the first time (which is why I added the /splash/index.html) but then need to be able to get out of that splash directory to the actual website. If I change my links to domain.net/index.php or domain.net/directory/index.php I don't run in to a problem. Though, I have some links throughout the websites that will reference just the main directory and not the individual .php file, so that begins to be an issue that someone may click a link and get sent to the splash screen, rather than that sites home page :/