joomla2.5 - To Slow Joomla Site in all browsers -

I have a site without heavy content in the main page but have a slow load. In the main page, hn-emdad.ir I have the following modules: A dj image slider is for all who have two ZF simple marquee SP News Highlights and an 184KB swf header. The template created by the artist and Joomla version is 25.11, please help me improve the speed

I Check out Chrome's "Aspect Element" feature when I have a slow loading page Open the "Inspect network" tab Go to the "Networks" tab and refresh the page It will show you a time (latency) as each element load , And you can reduce your obstacles .