Open an APK from html - Website 2 APK Forums

David

I am at the point of giving up. I would gladly pay for help.
All I want to do is open another app if it is there, if not goto a predefined website.
This is what I goo so far...

<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
    <meta name="viewport" content="width=device-width,minimum-scale=1.0, maximum-scale=1.0" />
    <title>Site Name</title>
    <style>@media screen and (max-device-width:480px){body{-webkit-text-size-adjust:none}}</style>
 
 
<data android:scheme="CinemaHD"
      android:host="com.yoku.marumovie.analytics"
      android:path="/data/app/com.yoku.marumovie.analytics-1/base.apk" 
	  />
 </head>
<body>
 
    <!-- button to Download App for new app users -->
    <form action="http://google.ca" target="_blank">
        <input type="submit" value="Download" />
    </form>
 
    <!-- button to Open App to specific screen for existing app users -->
    <form action="com.yoku.marumovie.analytics" target="_blank">
        <input type="submit" value="Open App" />
    </form>
 
</body>
</html>

The app here is called CinemaHD but I'm just using that to test, it will change.
Please help, can somone provide working code?