client.js

var fallbackFunction = function() {
	window.location.replace('market://details?id=com.myapp.package');
};
var addIFrame = function() {
	var iframe = document.createElement("iframe");
	iframe.style.border = "none";
	iframe.style.width = "1px";
	iframe.style.height = "1px";
	iframe.src = 'your_uri_scheme://';
	document.body.appendChild(iframe);
};
addIFrame();
setTimeout(fallbackFunction, 250);