var is_left;
var is_right;
var count_times;
var current_tab="1";
var on_tab="1";


function moveItRight() 
{
	if (is_right==0)
  		return;
	var current_right;
  	current_right = parseInt(moving_div.style.left);
  	if(current_right==0)
  	    return;
	current_right = current_right +20;
	moving_div.style.left=current_right;
	count_times++;
	if(current_right<0)
		setTimeout("moveItRight()",150);
}

function moveItleft() 
{
    var pxR = document.getElementById("moving_div").style.left;
    pxR = pxR.replace("px","");
    
    if(parseInt(pxR)<-100*5) return;

  if (is_left==0)
  		return;
  var current_left;
  var div_width=moving_div.clientWidth;
 // alert("div_width:" + div_width)
  var to_stop_left = 400-div_width;
 // alert("to_stop_left:" + to_stop_left)
  current_left = parseInt(moving_div.style.left);
  //alert("current_left:" + current_left)
  current_left = current_left -20;
  moving_div.style.left=current_left;
  if (current_left >= to_stop_left)
 	setTimeout("moveItleft()",150);
 // alert(moving_div.style.left);
} 
 
function StopLeft() 
{
   is_left=0;
   moveItleft();
}

 
function StartLeft() 
{
  is_left=1;
  moveItleft();
}
 
function StopRight()
{
   is_right=0;
   moveItRight();
}

 
function StartRight() 
{
   is_right=1;
   moveItRight();
}

function containsDOM (container, containee) {
  var isParent = false;
  do {
    if ((isParent = container == containee))
      break;
    containee = containee.parentNode;
  }
  while (containee != null);
  return isParent;
}

function checkMouseEnter (element, evt) {
  if (element.contains && evt.fromElement) {
    return !element.contains(evt.fromElement);
  }
  else if (evt.relatedTarget) {
    return !containsDOM(element, evt.relatedTarget);
  }
}

function checkMouseLeave (element, evt) {
  if (element.contains && evt.toElement) {
    return !element.contains(evt.toElement);
  }
  else if (evt.relatedTarget) {
    return !containsDOM(element, evt.relatedTarget);
  }
}