function roundNumber(num, dec) {
	var result = Math.round(num*Math.pow(10,dec))/Math.pow(10,dec);
	return result;
}

function calcvic(myfrm, amt) {
	var total, result;
	total = 0;
	
	if (amt <= 20000) {
		total = 0.014 * amt;
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if (amt >= 20001){
		total = 280 + (0.024 * (amt - 20000));
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if (amt >= 115001) {
		result = "Price is over $115,000";		
	}
	myfrm.txtstampduty.value = result;
}

function calcnt(myfrm, amt) {
	var total, result;
	total = 0;
	
	if (amt <= 500000) {
		var x = amt/1000;
		total = (0.065 * (x*x)) + (21*x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if (amt >= 500001) {
		total = amt * 0.054;
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	myfrm.txtstampduty.value = result;
}

function calctas(myfrm, amt) {
	var total, result, x, y;
	x = 0; //bracket amount
	y = 0; //bracket addition
	total = 0;
	if (amt <= 1300) {
		x = 0;
		y = 0;
		total = 20;
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 1301) && (amt <= 10000)) {
		amt = amt - 1300;
		x = 1.50;
		y = 20.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 10001) && (amt <= 30000)) {
		amt = amt - 10000;
		x = 2.00;
		y = 150.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 30001) && (amt <= 75000)) {
		amt = amt - 30000;
		x = 2.50;
		y = 550.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 75001) && (amt <= 150000)) {
		amt = amt - 75000;
		x = 3.00;
		y = 1675.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	myfrm.txtstampduty.value = result;
}

function calcqld(myfrm, amt) {
	var total, result, x, y;
	x = 0; //bracket amount
	y = 0; //bracket addition
	total = 0;
	if (amt <= 20000) {
		x = 0;
		y = 0;
		total = 300;
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 20001) && (amt <= 50000)) {
		amt = amt - 20000;
		x = 2.25;
		y = 300.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	if ((amt >= 50001) && (amt <= 100000)) {
		amt = amt - 50000;
		x = 2.75;
		y = 975.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	myfrm.txtstampduty.value = result;
}

function calcnsw(myfrm, amt) {
	var total, result, x, y;
	x = 0; //bracket amount
	y = 0; //bracket addition
	total = 0;
	if (amt <= 14000) {
		x = 0;
		y = 0;
		total = 175;
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 14001) && (amt <= 30000)) {
		amt = amt - 14000;
		x = 1.50;
		y = 175.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	if ((amt >= 30001) && (amt <= 80000)) {
		amt = amt - 30000;
		x = 1.75;
		y = 415.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	if ((amt >= 80001) && (amt <= 300000)) {
		amt = amt - 80000;
		x = 3.50;
		y = 1290.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	myfrm.txtstampduty.value = result;
}

function calcwa(myfrm, amt) {
	var total, result, x, y;
	x = 0; //bracket amount
	y = 0; //bracket addition
	total = 0;
	if (amt <= 80000) {
		x = 0;
		y = 0;
		total = 1600;
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	if ((amt >= 80001) && (amt <= 100000)) {
		amt = amt - 80000;
		x = 3.00;
		y = 1600.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}	
	
	myfrm.txtstampduty.value = result;
}

function calcact(myfrm, amt) {
	var total, result, x, y;
	x = 0; //bracket amount
	y = 0; //bracket addition
	total = 0;
	if (amt <= 100000) {
		x = 2.00;
		total = y + ((amt/100) * x);
		total = roundNumber(total, 2);
		result = "$" + total;
	}
	
	myfrm.txtstampduty.value = result;
}

function selstate(state, myfrm, amt) {
	switch (state) {
		case "vic":
			calcvic(myfrm,amt);
			break;
		case "nt":
			calcnt(myfrm,amt);
			break;
		case "act":
			calcact(myfrm,amt);
			break;
		case "tas":
			calctas(myfrm,amt);
			break;
		case "qld":
			calcqld(myfrm,amt);
			break;
		case "nsw":
			calcnsw(myfrm,amt);
			break;
		case "wa":
			calcwa(myfrm,amt);
			break;
		case "na":
			break;
		default:
			break;
	}
}