How let chrome app extension continue scripting after changing page

i'm developing a chrome app that a certain point clicks on a link and go to another page (of the same website) but the script doesn't continue ( i have to re click on the chrome app and re start everyting) , is there a way to let it continue ?

This is my manifest:

{
"manifest_version": 2,
"name": "Button Click",  
"description": "Be able to press buttons",  
"version": "1.0",    
"browser_action": { 
    "default_icon": "images/icons/16.png",
    "default_popup": "popup.html"  
},
"permissions": ["tabs", "<all_urls>"]

}