为什么下面的程序调试不出来呢

[cl007]

<Script Language="JavaScript">
var timedate=new Data("August 8,2008");
var times="奥运会";
var now=new Date();
var date=timmedate.getTime()-now.getTime();
var time=Math.floor(date/(1000*60*60*24));
if(time>=0){
document.write("现在离"+times+"还有:"+time+"天")}
</Script>

但没有任何显示？

[是是非非]

<Script Language="JavaScript">
var timedate=new Date("August 8,2008");
var times="奥运会";
var now=new Date();
var date=timedate.getTime()-now.getTime();
var time=Math.floor(date/(1000*60*60*24));
if(time>=0){
document.write("现在离"+times+"还有:"+time+"天")}
</Script>

Data -> Date
timmedate -> timedate