We have a much faster interactive image map! * Image for highlighting rivers in link list instead of CSS manipulation. * Better event handling. * No more hover delay. Some problems still exist: * Sometime when switching the module to 'MINFO' the highlighted river on the image map is not unhighlighted. * The loop to unhighlight rivers when switching modules is called for every river.

next.gauge.id = \
    SELECT GAUGES_ID_SEQ.NEXTVAL AS gauge_id FROM DUAL
next.timeinterval.id = \
    SELECT TIME_INTERVALS_ID_SEQ.NEXTVAL AS time_interval_id FROM DUAL
next.discharge.id = \
    SELECT DISCHARGE_TABLES_ID_SEQ.NEXTVAL AS discharge_table_id FROM DUAL
next.discharge.table.values.id = \
    SELECT DISCHARGE_TABLE_VALUES_ID_SEQ.NEXTVAL AS discharge_table_values_id FROM DUAL