if(defaultDate==undefined || defaultDate==""){
var theDate=new Array();
calendar.head.innerText = calendar.today[0]+"-"+calendar.today+"-"+calendar.today;
theDate[0]=calendar.today[0]; theDate=calendar.today; theDate=calendar.today;
   }
   else{
var reg=/^\d{4}-\d{1,2}-\d{2}$/
if(!defaultDate.match(reg)){
  alert("默认日期的格式不正确\n\n默认日期可接受格式为:'yyyy-mm-dd'");
  return;
}
var theDate=defaultDate.split("-");
calendar.head.innerText = defaultDate;
   }
   calendar.currentDate[0]=theDate[0];
   calendar.currentDate=theDate;
   calendar.currentDate=theDate;
   theFirstDay=calendar.getFirstDay(theDate[0],theDate);
   theMonthLen=theFirstDay+calendar.getMonthLen(theDate[0],theDate);
   //calendar.setEventKey();

calendar.calendarPad.style.display="";
   var theRows = Math.ceil((theMonthLen)/7);
   //清除旧的日历;
   while (calendar.body.rows.length > 0) {
calendar.body.deleteRow(0)
   }
   //建立新的日历;
   var n=0;day=0;
   for(i=0;i<theRows;i++){
theRow=calendar.body.insertRow(i);
for(j=0;j<7;j++){
  n++;
  if(n>theFirstDay && n<=theMonthLen){
   day=n-theFirstDay;
   calendar.insertBodyCell(theRow,j,day);
  }