Javascript function to show how long ago a timestamp was as a pretty string

gistfile1.java

/**
 * Converts a timestamp to how long ago syntax
 * @param time The time in seconds 
 * @return The formatted time
 */
public static String timeAgo(int time)
{
	Unit[] units = new Unit[]
	{
		new Unit("s", 60, 1),
		new Unit("m", 3600, 60),
		new Unit("h", 86400, 3600),
		new Unit("d", 604800, 86400),
		new Unit("w", 2629743, 604800),
		new Unit("m", 31556926, 2629743),
		new Unit("y", 0, 31556926)
	};
	
	long currentTime = System.currentTimeMillis();
	int difference = (int)((currentTime / 1000) - (time));
	
	if (currentTime < 5)
	{
		return "now";
	}
	  
	int i = 0;
	Unit unit = null;
	while ((unit = units[i++]) != null) 
	{
	    if (difference < unit.limit || unit.limit == 0)
	    {
	    	int newDiff =  (int)Math.floor(difference / unit.inSeconds);
	    	return newDiff + "" + unit.name;
	    }
	}
	
	return "";
}

static class Unit
{
	public String name;
	public int limit;
	public int inSeconds;
	
	public Unit(String name, int limit, int inSeconds)
	{
		this.name = name;
		this.limit = limit;
		this.inSeconds = inSeconds;
	}
}