I have write one java project on IntelliJ idea 8.1.1.When I go to compile option of IntelliJ IDEA 8.1.1 then it shows pop-up message box, in that it shows error-

> 
> cannot determine version for JDK
>    
> Update JDK configuration.
> 
> 
> 

Even though I have proper JDK version, I have jdk1.5.0 installed in my PC working properly with other environment.
Please suggest any settings that I may need to change.