function showDefaultMessage()
    {
        top.defaultStatus = "Sistema de Administraci?n UAN";
    }
    
    function trim( s ) 
	{
  		while
  		(
  			( s.substring( 0, 1 ) == ' ' )
  			||
  			( s.substring( 0, 1 ) == '\n' )
  			||
  			( s.substring( 0, 1 ) == '\r' )
  		)
		{
    		s = s.substring(1,s.length);
		}

  		while
  		(
  			( s.substring( s.length - 1, s.length ) == ' ' )
  			||
  			( s.substring( s.length - 1, s.length ) == '\n' )
  			||
  			( s.substring( s.length - 1, s.length ) == '\r' )
  		)
  		{
    		s = s.substring( 0, s.length - 1 );
  		}
  
  		return s;
	}