Zoom in:
with "left mouse key" pressed, mark graph area and release key.
Zoom out:
click graph area with "right mouse key"
Query URL: http://mon.diglinks.com/cgi-bin/rrd2graph.cgi?action=zoom&hostname=demo&service=icmp&display=Daily&graph_height=120&graph_width=440&el=0 Generated by rrd2graph(1.4.0), total graphs =1