var monthAbr = ["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];
function getSaturdays(startDate) { 
var today = (typeof(startDate) == "undefined") ? new Date() : new Date(startDate);
var newDat;
var sat = document.getElementById("saturdays").options;
for (var i = today.getDate(); i <= (today.getDate() + 365); i++) {
newDat = new Date(today.getFullYear(),today.getMonth(),i);
if (newDat.getDay() === 6) {
var dayVal = (newDat.getDate() < 10) ? "0" + newDat.getDate() : newDat.getDate();
var opt = new Option(dayVal + " - " + monthAbr[newDat.getMonth()] + " - " + newDat.getFullYear(),newDat);
sat[sat.length] = opt;
}
}
}
window.onload=function() {
getSaturdays();
};