function Vew_Hide_Comment(num)
{
	
	var FRAME_RATE = 85, // Hz (average)
      FRAME_DELAY = Math.round(1000/FRAME_RATE);
	Vit = 10;
	Height_Beg = 160;
	Height_Max = 0;
	  
	Comment = document.getElementById("comment"+num);
	Comment_H = parseInt(Comment.style.height);
	OffsetCom = document.getElementById("offsetcom"+num);
	OffsetCom_H = OffsetCom.offsetHeight;
	Height_Max = OffsetCom_H+30;
	//alert(OffsetCom_H);
		if(Comment_H>=Height_Max)Vit = -Vit;
	timerId = setInterval(function () {
     Comment_H += Vit;
	  Comment.style.height = Comment_H+"px";
      if (Comment_H <= 0) {
        Comment_H = 0;
        stopMove();
      }
      if (Comment_H > Height_Max) {
        Comment_H = Height_Max;
        stopMove();
      }

    }, 20);
}

  function stopMove() {
    clearInterval(timerId);
  }