text: 
  var goToPrototypeApp = function(){
  	var action_url = "corpus.html";
  	chrome.tabs.create({
  		url: action_url
  	});
  }
  document.getElementById("goToPrototypeApp").onclick = goToPrototypeApp;
  
  var goToCorpusPagesApp = function(){
  	var action_url = "https://www.lingsync.org/public";
  	chrome.tabs.create({
  		url: action_url
  	});
  }
  document.getElementById("goToCorpusPagesApp").onclick = goToCorpusPagesApp;
  
  
  
  var goToSpreadsheetApp = function(){
  	var action_url = "http://app.lingsync.org";
  	chrome.tabs.create({
  		url: action_url
  	});
  }
  document.getElementById("goToSpreadsheetApp").onclick = goToSpreadsheetApp;
  
  
  var seeChromeBlog = function(){
  	var action_url = "http://blog.chromium.org/2012/11/restricting-extension-apis-in-legacy.html";
  	chrome.tabs.create({
  		url: action_url
  	});
  }
  document.getElementById("seeChromeBlog").onclick = seeChromeBlog;
  
  