/*
ARMOR CREDIT COST
Factor 	Formula
Base 	(Real Cost x Active Points) x (*50-Mass) x 10
Uncommon 	x 1.5
Rare 	x 2 or more

*The Mass Mutliple cant be less than 2
*/

var massThreshold = 51;
function getArmorCost(ddlForm)
{
	handleRealCostActivePoints(ddlForm);
	var ap = getArmorActivePoints(ddlForm);
	var rc = getArmorRealCost(ddlForm);
	var ms = getArmorMass(ddlForm);
	var mm = getMassMultiple(ms);
	var av = getArmorAvailablityMultiple(ddlForm);
	if(mm <= 0)
	{
		var baseCost = (((ap * rc) * 10) * av);
		var discount = (mm * (baseCost / 1000));
		//Point of diminishing return on discount
		discount = ((discount * -1) >= (baseCost * .9)) ? (baseCost - parseFloat(baseCost / 100)) * -1 : discount;
		ddlForm.armorCreditCost.value = FormatNumber(parseFloat(baseCost + discount),0,false,false,true);	
	}
	else
	{
		ddlForm.armorCreditCost.value = FormatNumber(((((ap * rc) * mm) * 10) * av),0,false,false,true);
	}
}
function handleRealCostActivePoints(ddlForm)
{
	var ap = parseFloat("0");
	//parse input
	ap  = getArmorActivePoints(ddlForm);
	

	var rc = parseFloat("0");
	//parse input
	rc  = getArmorRealCost(ddlForm);
	
	if(rc > ap) //RealCost cannot exceed ActivePoints; 0 RC
	{
		ddlForm.armorRealCost.value = FormatNumber(parseFloat("0"),0,false,false,true);
		ddlForm.armorActivePoints.value = FormatNumber(parseFloat(rc),0,false,false,true);
	}
	else
	{	
		ddlForm.armorActivePoints.value = FormatNumber(parseFloat(ap),0,false,false,true);
		ddlForm.armorRealCost.value = FormatNumber(parseFloat(rc),0,false,false,true);
	}
	
}

function getArmorActivePoints(ddlForm)
{
	var ap = parseFloat("0");
	//parse input
	ap  = ddlForm.armorActivePoints.value.replace(/\$|\,/g,'');
	ap  =  parseFloat((isNaN(ap ) || (ap =="")) ? "0": ap );
	
	ddlForm.armorActivePoints.value = FormatNumber(parseFloat(ap),0,false,false,true);
	return parseFloat(ap);
}
function getArmorRealCost(ddlForm)
{
	var rc = parseFloat("0");
	//parse input
	rc  = ddlForm.armorRealCost.value.replace(/\$|\,/g,'');
	rc  =  parseFloat((isNaN(rc) || (rc =="")) ? "0": rc );
	ddlForm.armorRealCost.value = FormatNumber(parseFloat(rc),0,false,false,true);
	return parseFloat(rc);
}
function getArmorAvailablityMultiple(ddlForm)
{
	var av = parseFloat("0");
	//parse input
	av = ddlForm.armorAvailabilityList[ddlForm.armorAvailabilityList.selectedIndex].value;
	return parseFloat(av);
}
function getArmorMass(ddlForm)
{
	var ms = parseFloat("0");
	//parse input
	ms  = ddlForm.armorMass.value.replace(/\$|\,/g,'');
	ms  =  parseFloat((isNaN(ms) || (ms =="")) ? "0": ms );
	ddlForm.armorMass.value = FormatNumber(parseFloat(ms),0,false,false,true);
	return parseFloat(ms);
}
function getMassMultiple(ms)
{
	massMultiple = (massThreshold - ms);
	return parseFloat(massMultiple);
}
function FormatNumber(num,decimalNum,bolLeadingZero,bolParens,bolCommas)
	/**********************************************************************
	IN:
		NUM - the number to format
		decimalNum - the number of decimal places to format the number to
		bolLeadingZero - true / false - display a leading zero for
										numbers between -1 and 1
		bolParens - true / false - use parenthesis around negative numbers
		bolCommas - put commas as number separators.
 
	RETVAL:
		The formatted number!
 	**********************************************************************/
{ 
        if (isNaN(parseInt(num))) return "NaN";

	var tmpNum = num;
	var iSign = num < 0 ? -1 : 1;		// Get sign of number
	
	// Adjust number so only the specified number of numbers after
	// the decimal point are shown.
	tmpNum *= Math.pow(10,decimalNum);
	tmpNum = Math.round(Math.abs(tmpNum))
	tmpNum /= Math.pow(10,decimalNum);
	tmpNum *= iSign;					// Readjust for sign
	
	
	// Create a string object to do our formatting on
	var tmpNumStr = new String(tmpNum);

	// See if we need to strip out the leading zero or not.
	if (!bolLeadingZero && num < 1 && num > -1 && num != 0)
		if (num > 0)
			tmpNumStr = tmpNumStr.substring(1,tmpNumStr.length);
		else
			tmpNumStr = "-" + tmpNumStr.substring(2,tmpNumStr.length);
		
	// See if we need to put in the commas
	if (bolCommas && (num >= 1000 || num <= -1000)) {
		var iStart = tmpNumStr.indexOf(".");
		if (iStart < 0)
			iStart = tmpNumStr.length;

		iStart -= 3;
		while (iStart >= 1) {
			tmpNumStr = tmpNumStr.substring(0,iStart) + "," + tmpNumStr.substring(iStart,tmpNumStr.length)
			iStart -= 3;
		}		
	}

	// See if we need to use parenthesis
	if (bolParens && num < 0)
		tmpNumStr = "(" + tmpNumStr.substring(1,tmpNumStr.length) + ")";

	return tmpNumStr;	
}