function menuMark( menuNr, toMode )
{
	if( toMode == 'on' )
	{
		if( document.all ) 
		{ 
			var img = document.all[ 'menuImage' + menuNr ];
			var src = img.src.replace( '.gif', '_o.gif' );
			img.src = src;
			//document.all[ 'menuElement' + menuNr ].style.backgroundColor = '#749097'; 
		}
		else if( document.images )
		{
			var img = document.images[ 'menuImage' + menuNr ];
			var src = img.src.replace( '.gif', '_o.gif' );
			img.src = src;
		}
		else if( document.getElementById )
		{
			var img = document.getElementByName( 'menuImage' + menuNr );
			var src = img.src.replace( '.gif', '_o.gif' );
			img.src = src;
			//var elm = document.getElementById( 'menuElement' + menuNr )
			//elm.style.backgroundColor = '#749097';
		}
	}
	if( toMode == 'off' )
	{
		if( document.all ) 
		{ 
			var img = document.all[ 'menuImage' + menuNr ];
			var src = img.src.replace( '_o.gif', '.gif' );
			img.src = src;
			//document.all[ 'menuElement' + menuNr ].style.backgroundColor = '#749097'; 
		}
		else if( document.images )
		{
			var img = document.images[ 'menuImage' + menuNr ];
			var src = img.src.replace( '_o.gif', '.gif' );
			img.src = src;
		}
		else if( document.getElementById )
		{
			var img = document.getElementByName( 'menuImage' + menuNr );
			var src = img.src.replace( '_o.gif', '.gif' );
			img.src = src;
			//var elm = document.getElementById( 'menuElement' + menuNr )
			//elm.style.backgroundColor = '#749097';
		}
	}
}