Hacks the hour difference for a date range that straddles dst.

dsthack.js

    function normalizeForDST(dataProvider, key) {
        var dateKey = key || "date",
            len = dataProvider.length,
            dsd = new Date("3/11/2013").valueOf(),     
            min = new Date(dataProvider[0][dateKey]).valueOf(),
            max = new Date(dataProvider[len - 1][dateKey]).valueOf(),
            multiplier = (1000 * 60 * 60)/(len - 1),
            i,
            day;

        if(min < dsd && max >= dsd) {
            for(i = 1; i < len; i = i + 1) {
                dataProvider[i][dateKey] = new Date(dataProvider[i][dateKey]).valueOf() + (multiplier * i); 
            
            }
        }
    }