function displayRow(rowId){
	var row = document.getElementById(rowId);
	if (row.style.display == '') row.style.display = 'none';
	else row.style.display = '';
}

function replaceText( nodeElement ) {
	var oldText = nodeElement.firstChild;
	if (oldText.data == 'Vis')
		var newText = document.createTextNode( 'Skjul' );
	else
		var newText = document.createTextNode( 'Vis' );
	nodeElement.replaceChild( newText, oldText );
}