function node_click(obj_li,obj_img)
{
  obj_li = document.getElementById(obj_li);
  obj_img = document.getElementById(obj_img);
  if (obj_img.className == 'plus')
  {
    obj_img.className = 'minus';
    obj_li.style.display = 'block';
  }
  else
  {
	  obj_img.className = 'plus';
	  obj_li.style.display = 'none';
  }
}
function popupWindow( url )
{
  window.open( url,'popupWindow','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=450,height=280,screenX=150,screenY=150,top=150,left=150' );
}

function openWindow( url, name, width, height )
{
  popupWin = window.open( url, name, 'status=1, toolbar=0, location=0, menubar=0, resizable=1, directories=0, menubar=0, scrollbars=1, top=20, left=20, width=' + width + ', height=' + height );
}