Modify navigation

gistfile1.js

// This function updates application controls once a navigation
// has completed.
navigated: function () {
	// Do application specific on-navigated work here
	var backButton = this.pageElement.querySelector("header[role=banner] .win-backbutton");
	var forceShowBack = false;
	if (backButton) {

		// Si estoy en una sección, entonces el back es a la home
		if (nav.location == "pages/section/groupDetailPage.html" || nav.location == "pages/video/landingVideoSection.html") {
			backButton.onclick = function () { nav.navigate("/pages/home/landingHome.html");; };
			forceShowBack = true
		} else {
			backButton.onclick = function () { nav.back(); };
		}
		
		if (nav.canGoBack || forceShowBack) {
			backButton.removeAttribute("disabled");
		} else {
			backButton.setAttribute("disabled", "disabled");
		}

	}
},