I decided to use the milliseconds and convert it over with this code
Code:
var d = new Date();
var time_until = (kickoff_date - d.getTime());
var days = Math.floor(time_until/86400000);
time_until = time_until%86400000
var hours = Math.floor(time_until/3600000);
time_until = time_until%3600000
var minutes = Math.floor(time_until/60000);
time_until = Math.floor(time_until%60000);
var seconds = Math.floor(time_until/1000);
var milliseconds = Math.floor(time_until%1000);