Add and delete graphs of Interface Statistics

[ok1ean]

In advance I apologize for my bad english.
In our work we use cacti and draw a large number of graphs with Cisco interfaces. A bit lacking couple features that I think would be useful not only to us.
The first - in the window generate graphs on the device (*Create Graphs for this Host) in the header of the table there is an item "Select all".
It puts mark in checkbox of the lines that have not yet been created graphics. The same place where they are - the line highlighted in gray, and there is no checkbox.
Can anyone write code modification to the tables "SNMP - Interface Statistics" for selection got only lines where the graphics are not created and "Status" column the port was "Up"?
Second wish is a bit like the previous one.
On the "Graph List" page, there are a lot of graphs "Interface Statistics" created previously, but now some of them are not necessary, since the status of the "Down" port. It would be good if the page "* Create Graphs for this Host" in the tables "SNMP - Interface Statistics" can be selected all lines with existing graphs with "Down" status (for example, after the column "Select all" add another "Select all Down" ) for subsequent removal.