//************* 插入日期单元格 **************/
  this.insertBodyCell=function(theRow,j,day,targetObject){
   var theCell=theRow.insertCell(j);
   if(j==0) var theBgColor="#FF9999";
   else var theBgColor="#FFFFFF";
   if(day==calendar.currentDate) var theBgColor="#CCCCCC";
   if(day==calendar.today) var theBgColor="#99FFCC";
   theCell.bgColor=theBgColor;
   theCell.innerText=day;
   theCell.align="center";
   theCell.width=35;
   theCell.style.cssText="border:1 solid #CCCCCC;cursor:hand;";
   theCell.onmouseover=function(){
theCell.bgColor="#FFFFCC";
theCell.style.cssText="border:1 outset;cursor:hand;";
   }
   theCell.onmouseout=function(){
theCell.bgColor=theBgColor;
theCell.style.cssText="border:1 solid #CCCCCC;cursor:hand;";
   }
   theCell.onmousedown=function(){
theCell.bgColor="#FFFFCC";
theCell.style.cssText="border:1 inset;cursor:hand;";
   }
   theCell.onclick=function(){
if(calendar.currentDate.length<2) calendar.currentDate="0"+calendar.currentDate;
if(day.toString().length<2) day="0"+day;
calendar.sltDate=calendar.currentDate[0]+"-"+calendar.currentDate+"-"+day;
calendar.target.value=calendar.sltDate;
calendar.hide();
   }
  }
  /************** 取得月份的第一天为星期几 *********************/
  this.getFirstDay=function(theYear, theMonth){
   var firstDate = new Date(theYear,theMonth-1,1);
   return firstDate.getDay();
  }
  /************** 取得月份共有几天 *********************/