Rails - May 2009 - Plotting data with flot

I know this is not the right place to raise this question and at the
same time i do know that this is the right place to get the right
people. So, I am raising it over here (because i am struck in the
middle of nowhere). My question is like this:

how to add the zooming facility to the below data (extracted from
turning-series example of flot and something little changed). In this
zooming facility what i want to achieve is that first select
the region to be zoomed and then click the button to zoomed to the
selected region and if possible zoom out functionality as well.

var datasets = {
        "usa": {
            label: "USA",
            data: [[1988, 483994], [1989, 479060], [1990, 457648],
[1991, 401949], [1992, 424705], [1993, 402375], [1994, 377867], [1995,
357382], [1996, 337946], [1997, 336185], [1998, 328611], [1999,
329421], [2000, 342172], [2001, 344932], [2002, 387303], [2003,
440813], [2004, 480451], [2005, 504638], [2006, 528692]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        },
        "russia": {
            label: "Russia",
            data: [[1988, 218000], [1989, 203000], [1990, 171000],
[1992, 42500], [1993, 37600], [1994, 36600], [1995, 21700], [1996,
19200], [1997, 21300], [1998, 13600], [1999, 14000], [2000, 19100],
[2001, 21300], [2002, 23600], [2003, 25100], [2004, 26100], [2005,
31100], [2006, 34700]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        },
        "uk": {
            label: "UK",
            data: [[1988, 62982], [1989, 62027], [1990, 60696], [1991,
62348], [1992, 58560], [1993, 56393], [1994, 54579], [1995, 50818],
[1996, 50554], [1997, 48276], [1998, 47691], [1999, 47529], [2000,
47778], [2001, 48760], [2002, 50949], [2003, 57452], [2004, 60234],
[2005, 60076], [2006, 59213]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        },
        "germany": {
            label: "Germany",
            data: [[1988, 55627], [1989, 55475], [1990, 58464], [1991,
55134], [1992, 52436], [1993, 47139], [1994, 43962], [1995, 43238],
[1996, 42395], [1997, 40854], [1998, 40993], [1999, 41822], [2000,
41147], [2001, 40474], [2002, 40604], [2003, 40044], [2004, 38816],
[2005, 38060], [2006, 36984]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        },
        "denmark": {
            label: "Denmark",
            data: [[1988, 3813], [1989, 3719], [1990, 3722], [1991,
3789], [1992, 3720], [1993, 3730], [1994, 3636], [1995, 3598], [1996,
3610], [1997, 3655], [1998, 3695], [1999, 3673], [2000, 3553], [2001,
3774], [2002, 3728], [2003, 3618], [2004, 3638], [2005, 3467], [2006,
3770]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        },
        "sweden": {
            label: "Sweden",
            data: [[1988, 6402], [1989, 6474], [1990, 6605], [1991,
6209], [1992, 6035], [1993, 6020], [1994, 6000], [1995, 6018], [1996,
3958], [1997, 5780], [1998, 5954], [1999, 6178], [2000, 6411], [2001,
5993], [2002, 5833], [2003, 5791], [2004, 5450], [2005, 5521], [2006,
5271]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        },
        "norway": {
            label: "Norway",
            data: [[1988, 4382], [1989, 4498], [1990, 4535], [1991,
4398], [1992, 4766], [1993, 4441], [1994, 4670], [1995, 4217], [1996,
4275], [1997, 4203], [1998, 4482], [1999, 4506], [2000, 4358], [2001,
4385], [2002, 5269], [2003, 5066], [2004, 5194], [2005, 4887], [2006,
4891]],
lines: {show: true},
                        bars: {show: true, barWidth: 1}
        }
    };