Exclude holidays when counting days in jQuery datepicker range

Hi,

This piece of code reduces the weekends from a range of selected days in jQuery datepicker:

var start = new Date($("#startdate").val().split("/").reverse().join(","));
var end = new Date($("#enddate").val().split("/").reverse().join(","));

var weekend_count = 0;
for (i = start.valueOf(); i <= end.valueOf(); i+= 86400000){
	var temp = new Date(i);
	if (temp.getDay() == 0 || temp.getDay() == 6) {
		weekend_count++;
	}
}				
$("#days").val((end - start) / 86400000 + 1 - weekend_count);        

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I would like to alter it so also specific holidays that fall within the selected range are reduced:

var currentYear = (new Date).getFullYear();
var disabledDays = ["1-1-"+currentYear,"25-12-"+currentYear,"26-12-"+currentYear];

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How should i alter the code?
Thanks!