function changeVisibility( id )

{

	var state = document.getElementById( id ).style.display;

	

	if( state == 'none' )

		showElement( id );

	else if( state == 'inline' )

		hideElement( id );

		

}



function showElement( id )

{

	var element = document.getElementById( id );

	element.style.display = 'inline';

}



function hideElement( id )

{

	var element = document.getElementById( id );

	element.style.display = 'none';

}