DateDiff Coming Up Negative

I was going to use the DateDiff function for something, so I looked up the syntax real quick at w3schools. Here's what they have:

document.write(Date & "<br />")
document.write(DateDiff("m",Date,"12/31/2002") & "<br />")
document.write(DateDiff("d",Date,"12/31/2002") & "<br />")
document.write(DateDiff("n",Date,"12/31/2002"))

Output:1/14/2002
11
351
505440

I put the same code into a simple test document to verify, except for mine has Response.Write. All my numbers came out negative. If I reverse their positions, I get positive numbers. Is the example above wrong or is there something going on with my PC?