Page Load for the first time users

hi,

we have one Sharepoint 2010 Web application and it is an intranet site, the issue is that when ever its loading for the first time its taking around 3 minutes to load. 

so i checked this site on the fiddler to check why it is taking so long to load the page and i found that the Images,controls and other files are loading in just 30 seconds but for the .Js files it is taking more time.

below are the .js files

core.js

sp.core.js

search.js

cui.js

ScriptResx.ashx

is there a way that i can load these files faster for the first time users

Thanks

sal