var winPopup=null;

function ShowPopup(strURL,strHeight,strWidth){
  var screenW = 640, screenH = 480;
  var posTop = 0, posLeft = 0;
  var height = parseInt(strHeight);
  var width = parseInt(strWidth);
  if (parseInt(navigator.appVersion)>3) {
   screenW = screen.width;
   screenH = screen.height;
  }
  else if (navigator.appName == "Netscape" 
      && parseInt(navigator.appVersion)==3
      && navigator.javaEnabled()
     ) 
  {
   var jToolkit = java.awt.Toolkit.getDefaultToolkit();
   var jScreenSize = jToolkit.getScreenSize();
   screenW = jScreenSize.width;
   screenH = jScreenSize.height;
  }
  posTop = (screenH - height)/2;
  posLeft = (screenW - width)/2;
	winPopup=window.open(strURL,"","scrollbars=yes,resizable=no,top="+posTop+",left=" + posLeft + ",height="+strHeight+",width="+strWidth);
}

function closeChildWindow(){
  if(winPopup!=null && !winPopup.closed)winPopup.close();
}

function StartAnimation(){
  document.images.item("imgSpinner").src = "images/spinner.gif";
}