Button goes to website on click. Can I make it go back?

[Abto_H_]

I have a program made on Intel XDK where a button takes the app to a website on click. The flow of the program is shown below. Is there a way to go from the Website back to the chat button page in the app? If we use the physical back button found on android devices it goes all the way back to the beginning (Main page). We just want to go back one page (chat button page).  

Main page ---> Menu ----> Select contact ----->Chat Button ------>Web-based chat system

[Aahedi]

To open an external website you can use inappbrowser plugin. so we can return to the app with ease. https://github.com/apache/cordova-plugin-inappbrowser