【图】源码学习:一个简单的日历控件(7)

     else{
      var theCell=theRow.insertCell(j);
      theCell.style.cssText="background-color:#F0F0F0;cursor:default;";
     }
    }
   }

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   //****************调整日历位置**************//
   var offsetPos=calendar.getAbsolutePos(calendar.source);//计算对像的位置;
   if((document.body.offsetHeight-(offsetPos.y+calendar.source.offsetHeight-document.body.scrollTop))<calendar.calendarPad.style.pixelHeight){
    var calTop=offsetPos.y-calendar.calendarPad.style.pixelHeight;
   }
   else{
    var calTop=offsetPos.y+calendar.source.offsetHeight;
   }
   if((document.body.offsetWidth-(offsetPos.x+calendar.source.offsetWidth-document.body.scrollLeft))calendar.calendarPad.style.pixelWidth){
    var calLeft=offsetPos.x;
   }
   else{
    var calLeft=calendar.source.offsetLeft+calendar.source.offsetWidth;
   }
   //alert(offsetPos.x);
   calendar.calendarPad.style.pixelLeft=calLeft;
   calendar.calendarPad.style.pixelTop=calTop;
}
/****************** 计算对像的位置 *************************/
this.getAbsolutePos = function(el) {
   var r = { x: el.offsetLeft, y: el.offsetTop };
   if (el.offsetParent) {
    var tmp = calendar.getAbsolutePos(el.offsetParent);
    r.x += tmp.x;
    r.y += tmp.y;
   }
   return r;
};