function getPWClientSize()
{
  var theWidth, theHeight;
  
  if (window.innerWidth)
  {
    theWidth=window.innerWidth;
  }
  else if (document.documentElement && document.documentElement.clientWidth) 
  {
    theWidth=document.documentElement.clientWidth;
  }
  else if (document.body) 
  {
    theWidth=document.body.clientWidth;
  };
  
  if (window.innerHeight) 
  {
    theHeight=window.innerHeight;
  }
  else if (document.documentElement && document.documentElement.clientHeight) 
  {
    theHeight=document.documentElement.clientHeight;
  }
  else if (document.body) 
  {
    theHeight=document.body.clientHeight;
  };
  
  return new Object({Width:theWidth, Height:theHeight});
};

function showWait()
{
  var size = getPWClientSize();
  
  var waitbg = document.createElement("div");
  waitbg.style.position = "fixed";
  waitbg.style.left = "0px";
  waitbg.style.top = "0px";
  waitbg.style.height = "100%";
  waitbg.style.width = "100%";
  waitbg.style.background = "black";
  waitbg.id = "waitBg";
  if (((navigator.userAgent.toLowerCase().indexOf("msie") != -1) && (navigator.userAgent.toLowerCase().indexOf("opera") == -1)))
  {
    waitbg.style.filter = 'alpha(opacity=30)';
  }
  else // for mozilla
  {
    waitbg.style.opacity = 0.3;
  };
  document.body.appendChild(waitbg);
  
  var waitDiv = document.createElement("div");
  waitDiv.id = "waitDiv";
  waitDiv.style.position = "fixed";
  waitDiv.style.width = "200px";
  waitDiv.style.height = "150px";
  var x = ((size.Width/2) < 100)?(0):((size.Width/2)-100);
  var y = ((size.Height/2) < 75)?(0):((size.Height/2)-75);
  waitDiv.style.left = x + "px";
  waitDiv.style.top = y + "px";
  waitDiv.style.background = "#dddddd";
  waitDiv.style.border = "1px solid black";
  waitDiv.style.color = "black";
  waitDiv.style.font = "bold 18px Tahoma";
  waitDiv.style.paddingTop = "40px";
  waitDiv.style.textAlign = "center";
  waitDiv.innerHTML = "Please Wait...<br/><br/><img src='/scripts/pleasewait.gif' />";
  document.body.appendChild(waitDiv);
};

function hideWait()
{
  try
  {
    document.body.removeChild(document.getElementById('waitDiv'));
    document.body.removeChild(document.getElementById('waitBg'));
  }
  catch (er)
  {
  };
};