function nextpage(event) 
{
event = event ? event : (window.event ? window.event : null); 
//if (event.keyCode==13) location=bookpage if (event.keyCode==37) location=prevpage
if (event.keyCode==39) location=nextpage

//if (event.keyCode==37) location=prevpage //if (event.keyCode==39) location=nextpage}
关于日期的常见操作
http://community.csdn.net//Expert/TopicView2.asp?id=4360247&datebasetype=now
js FAQ贴
http://community.csdn.net//Expert/TopicView2.asp?id=4356360&datebasetype=now
DHTML手册,js手册,dom手册下载
http://community.csdn.net//Expert/TopicView2.asp?id=4356325&datebasetype=now