function toggleblock (fid,add ) {
	if ( add )
	{
	  my_show_div( my_getbyid( 'fc_'+fid ) );
	  my_hide_div( my_getbyid( 'fo_'+fid ) );
	} else {
	  my_show_div( my_getbyid( 'fo_'+fid ) );
	  my_hide_div( my_getbyid( 'fc_'+fid ) );
	}
}

function my_hide_div (itm) {
	if (!itm ) return;
	itm.style.display = "none";
}

function my_show_div (itm) {
	if (!itm ) return;
	itm.style.display = "";
}

function my_getbyid (id) {
	itm = null;
	if (document.getElementById) {
	  itm = document.getElementById(id);
	} else if (document.all) {
	  itm = document.all[id];
	} else if (document.layers) {
	  itm = document.layers[id];
	}
	return itm;
}