function toggle( idStr ) {
	var node = getNode( idStr );
	
	if( node == null ) return;

	if( node.style.display == "" || node.style.display == "none" )
    node.style.display = "block"; 
	else
	  node.style.display = "none"; 
	
}


function getNode( nodeId ) {
	if( document.getElementById ) {
		return document.getElementById( nodeId );
	}
	else if( document.all && document.all( nodeId ) ) {
		return document.all( nodeId );
	}
	else if( document.layers && document.layers[ nodeId ] ) {
		return document.layers[ nodeId ];
	}
	else {
		return false;
	}
}