// CED subroutine for cleaning up JavaScript rounding errors

// to any reasonable number of decimal places 5/5/1997 last mod 2/19/2004

// round for decimal of (value of precision) places, default is 3

// This routine can be used to pass a number and a number for precision

// or just a number only, that is to be rounded to a set number of decimal

// places. This routine supports leading and trailing zeros, leading and

// trailing spaces, and padding. To prevent errors, pass variables as a string.



function perRound(num, precision) {

	var precision = 3; //default value if not passed from caller, change if desired

	// remark if passed from caller

	precision = parseInt(precision); // make certain the decimal precision is an integer

    var result1 = num * Math.pow(10, precision);

    var result2 = Math.round(result1);

    var result3 = result2 / Math.pow(10, precision);

    return zerosPad(result3, precision);

}



function zerosPad(rndVal, decPlaces) {

    var valStrg = rndVal.toString(); // Convert the number to a string

    var decLoc = valStrg.indexOf("."); // Locate the decimal point

    // check for a decimal

    if (decLoc == -1) {

        decPartLen = 0; // If no decimal, then all decimal places will be padded with 0s

        // If decPlaces is greater than zero, add a decimal point

        valStrg += decPlaces > 0 ? "." : "";

    }

    else {

        decPartLen = valStrg.length - decLoc - 1; // If there is a decimal already, only the needed decimal places will be padded with 0s

    }

     var totalPad = decPlaces - decPartLen;    // Calculate the number of decimal places that need to be padded with 0s

    if (totalPad > 0) {

        // Pad the string with 0s

        for (var cntrVal = 1; cntrVal <= totalPad; cntrVal++)

            valStrg += "0";

        }

    return valStrg;

}

// clears field of default value

function clear_field(field) {

		if (field.value==field.defaultValue) {

			field.value=''

		}

	}



//Multiplication

function doMath(form) {

var firstnumber = 0;

var secondnumber = 0;

//var thirdnumber = 0;

var tempvalue = 0;

firstnumber = eval(form.ItemCost.value); //first number

secondnumber = eval(form.userNumberOfPayments.value); //secondnumber

//thirdnumber = eval(form.BillingScheduleID.value); //thirdnumber

tempvalue = (firstnumber) * (secondnumber);

form.userTotalDonationAmount.value = (tempvalue); //out

}