var current = null;
var offsetX = 0;
var offsetY = 0;
var dragging = false;
var startedDragging = false;
function setCurrent(w)
{
  // unset old current
  if (current)
    current.className = 'window';
  // set current
  current = w;
  current.className = 'current window';
  // put current on top
  windows.appendChild(current);

  // init drag
  offsetX = event.x - parseInt(current.currentStyle.left);
  offsetY = event.y - parseInt(current.currentStyle.top);
  dragging = true;
}

function moveCurrent()
{
  if (!dragging || !current)
    return;
    
  if (event.button == 0)
  {
    releaseCurrent();
    return;
  }
  
  if (!startedDragging)
  {
    current.className = 'dragging current window';
    startedDragging = true;
  }
    
  current.style.pixelLeft = event.x - offsetX;
  current.style.pixelTop = event.y - offsetY;
}

function releaseCurrent()
{
  if (!current)
    return;
    
  current.className = 'current window';
  dragging = false;
  startedDragging = false;
}

function BrowserDetect()
{
	var objForm;
	var browserName = new String(navigator.appName);

	var isOp=window.opera?1:0;
	
	if (browserName == "Microsoft Internet Explorer")
	{
		if(isOp==0) document.getElementById("windows").style.display="block";
		else {}
	}
    else {}
}