function fPopCalendar(popCtrl){
  var point = fGetXY(popCtrl), left = point.x+150, top  = point.y+25;
  
  window.open('../Calendario.aspx?textbox='+popCtrl.id,'calendario','width=230, height=230, left='+left+', top='+top+', menubar=no, status=no, location=no, toolbar=no, scrollbars=no, resizable=no, titlebar=no');
}

function fGetXY(aTag){
  var oTmp = aTag;
  var pt = new Point(0,0);
  do {
  	pt.x += oTmp.offsetLeft;
  	pt.y += oTmp.offsetTop;
  	oTmp = oTmp.offsetParent;
  } while(oTmp.tagName!="BODY");
  return pt;
}

function Point(iX, iY){
	this.x = iX;
	this.y = iY;
}