Ajax concurrent calls

Ajax concurrent calls

Hello there,
newbie here. I'm trying to find the best way for fasted load a web page that contains inside the result of 5 different php scripts in 5 different sections of the page.
I would like that those scripts start to run at the same time and that the result will be displayed as soon as the 
script finished to work.
Now I thought that ajax could solve my problem ad i used 5 $load() to call my script on the load of the html page. But I had the bad surprise that the ajax calls are done sequentially.

Could someone please suggest my a better way to do this with or without ajax.

Thanks in advance

Roberto