Error in PS restore

[tablain]

PS 1.3.3

I had to reset server but before that took backup.After reset restore backup ( files and DB ) but giving error.

So i changed PHP version to 5.4 to domain and 

Somehow site loaded, got access backoffice, homepage too.

But inner pages showing error. I checked log file and found error:

PHP Deprecated:  Function eregi() is deprecated in /home/sitename/public_html/tools/smarty/compile/%%60^60C^60C3B71C%%header.tpl.php on line 66
PHP Deprecated:  Function eregi() is deprecated in /home/sitename/public_html/tools/smarty/compile/%%60^60C^60C3B71C%%header.tpl.php on line 93

homepage product images got broken too,

Somebody suggested me: Clear the cache and turn off debug mode, and see if the site works well enough.

But no idea how to do that, somebody give me helping hand ( able to pay ) need to fix asap.