import os
import subprocess
from subprocess import call
import time
import tkinter
from tkinter import filedialog
call("color a", shell=True)
root = tkinter.Tk()
root.withdraw()
print ("Please locate your firefox browser)")
path = filedialog.askopenfilename(parent=root,title="Please locate your firefox browser")
path = path + " {0}"
FNULL = open(os.devnull, 'w')
viewed = 0
url = "http://google.com"
refresh = 15
views = 5
call("cls", shell=True)
for i in range(views):
    proc = subprocess.Popen(path.format(url))
    time.sleep(refresh)
    viewed = viewed + 1
    print ("Viewed", viewed, "time")
    proc.terminate()
    call("cls", shell=True)
print ("Viewing finished in", refresh * views, "seconds")
time.sleep(5)