Implement the Olympic Countdown code using JavaScript

JS countdown to Olympics Code
Transferred from: JS China
Http://javascriptxml.5d6d.com/thread-4-1-1.html
< Div >
< Div class = " Bjday " ID = " TimeDate " Width = " 60 " >
</ Div >
< Div class = " Bjtim " ID = " Times " >
</ Div >
< Script >

VaR Now =   New Date ();
Function Createtime (){

VaR GRT =   New Date ( " 8/08/2008 20:00:00 " );

Now. settime (now. gettime () + 250 );
Days = (GRT - Now) /   1000   /   60   /   60   /   24 ;
Dnum = Math. Floor (days );
Hours = (GRT - Now) /   1000   /   60   /   60   - ( 24   * Dnum );
Hnum = Math. Floor (hours );
If (String (hnum). Length = 1 ) {Hnum =   " 0 "   + Hnum ;}
Minutes = (GRT - Now) /   1000   / 60   - ( 24   *   60   * Dnum) - ( 60   * Hnum );
Mnum = Math. Floor (minutes );
If (String (mnum). Length = 1 ) {Mnum =   " 0 "   + Mnum ;}
Seconds = (GRT - Now) /   1000   - ( 24   *   60   *   60   * Dnum) - ( 60   *   60   * Hnum) - ( 60   * Mnum );
Snum = Math. Round (seconds );
If (String (snum). Length = 1 ) {Snum =   " 0 "   + Snum ;}

Document. getelementbyid ( " TimeDate " ). Innerhtml = Dnum;
Document. getelementbyid ( " Times " ). Innerhtml = Hnum +   " <Span style = 'margin: 0 7px 0 7px '>:</span> " + Mnum +   " <Span style = 'margin: 0 7px 0 7px '>:</span> " + Snum;
}

Setinterval ( " Createtime () " , 250 );

</ Script >
</ Div >