var clDialogBox;

      function closeDialog()
      {
          if(parent.clDialogBox )
          {
			parent.clDialogBox.hide();
			parent.clDialogBox = null;                      
	      }
      }

      function creatDialog()
      {
          clDialogBox = new DialogBox("id", "  Chat User",250,50,650,520,"http://www.focussoftnet.com:6000/chat/chatindex.jsp", true,null,null,"user.gif");
          clDialogBox.setOnClose(destroySession);
          clDialogBox.show();
      }

      function destroySession()
      {
          sendPostRequest("logout.do","",null,null,false,"respHandler");
      }