答：在“自定义html”控件中添加下面这段代码即可实现：

<script language="JavaScript">
var enabled = 0; today = new Date();
var day; var date;
if(today.getDay()==0) day = "星期日"
if(today.getDay()==1) day = "星期一"
if(today.getDay()==2) day = "星期二"
if(today.getDay()==3) day = "星期三"
if(today.getDay()==4) day = "星期四"
if(today.getDay()==5) day = "星期五"
if(today.getDay()==6) day = "星期六"
document.fgColor = "1c1c1e";
date = " 今天是 " + (today.getYear()) + "年" + (today.getMonth() + 1 ) + "月" + today.getDate() + "日" + day +"";
document.write("<CENTER><TABLE BORDER=0 BGCOLOR=#1c1c1e><TH><FONT COLOR=FFFFFF>")
document.write("<CENTER>" + date.fontsize(2) + "</CENTER>");
document.write("</FONT></TH></TABLE></center><P>")
</script>