How to know wich javascript fucntion takes the lonest execution time?
I'm using jquery to perform ajax callback and deal with lot of objects (over 150).  
Some where in my code there's function causing the FF browser to show this message:  

> A script on this page may be busy, or it may have stopped responding.  
You can stop the script now, or you can continue to see if the script will complete.  
Script: mylocalserver/website/Scripts/jquery1.6.2.min.js:16  

So I need a way to know which script causes this busyness.  
If I can use firebug to do it, how could I use it ?  

Thanx
How to know wich javascript fucntion takes the lonest execution time?
===

I'm using jquery to perform ajax callback and deal with lot of objects (over 150).  
Some where in my code there's function causing the FF browser to show this message:  

> A script on this page may be busy, or it may have stopped responding.  
You can stop the script now, or you can continue to see if the script will complete.  
Script: mylocalserver/website/Scripts/jquery1.6.2.min.js:16  

So I need a way to know which script causes this busyness.  
If I can use firebug to do it, how could I use it ?  

Thanx