mtgox split limit orders

var v = tb.trade.getQuoteVars();
var ntrades = 5;

var percent = 0.02;
var rate_min = parseFloat(v.rate) - parseFloat(v.rate) * percent / 2;
var rate_max = parseFloat(v.rate) + parseFloat(v.rate) * percent / 2;
var total_left = v.total;
var rates = [];

var volumes = [];

for (var i = ntrades - 1; i >= 0; i--) {
	var rate = Math.random() * (rate_max - rate_min) + rate_min;
	var volume = Math.random() * (total_left / rate);
	if (i == 0)
		/* last -- use all funds */
		volume = total_left / rate;

	var total_left = total_left - (volume * rate);
	total_left = total_left.toFixed(7); // grr

	volumes[i] = volume;
	rates[i] = rate;

	console.log("rate: "+rates[i]+ " vol:" + volumes[i] + " cost:"+(volume * rate)+" leftover:" + total_left)
}

msg = "Randomly distributed orders to place:\n\n";
msg += "[rate],  [volume],  [total cost]\n\n"
for (var i = ntrades - 1; i >= 0; i--) {
	msg+= ""+rates[i].toFixed(7)+ ",\t" + volumes[i].toFixed(7) + ",\t"+(rates[i] * volumes[i]).toFixed(4)+"\n";
}
msg += "\nCancel and run again to change distribution.\n"

if (confirm(msg)) {
	var _price = $('.trade-price').val();
	var _vol  = $('#trade-amount').val();
	for (var i = ntrades - 1; i >= 0; i--) {
		$('.trade-price').val(rates[i].toFixed(7));
		$('#trade-amount').val(volumes[i].toFixed(7));
		tb.trade.addOrder();
	}
	$('.trade-price').val(_price);
	$('#trade-amount').val(_vol);
}