You need a plugin for this.
Check OrderBars and then use data like:
var series = [];
series.push({
data: [], // your raw data
bars: {
order: 0
}
});
series.push({
data: [], // your raw data
bars: {
order: 1
}
});
Example: http://jsfiddle.net/ZRXP5/
My example uses Mootools, but you find the jQuery version (.js file) in the link above.