function getAbsPoint(e){
  var x = e.offsetLeft;
  var y = e.offsetTop;
  while(e = e.offsetParent){
    x += e.offsetLeft;
    y += e.offsetTop;
  }
  return {"x": x, "y": y};
}
var issubmit = 0;
function submit_once() {
	if(issubmit==0) {
		issubmit = 1;
		return true;
	}
	alert("提交中，请耐心等待....");
	return false;
}