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;

}

// send the value in as "num" in a variable



// clears field of default value

function clear_field(field) {

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

field.value=''

}

}



function calcmpamt() {

var vcpIntearnded;

var princ;

var ratepc;

var years;

var rate;

var power;

var totalearn;

if (document.compoundintform.sav_amt.value != "" && document.compoundintform.sav_amt.value != "") {

vcpIntearnded = document.compoundintform.sav_amt.value * (document.compoundintform.sav_int.value / 100) * 1



}

if(vcpIntearnded) {

document.compoundintform.sav_earn.value = vcpIntearnded;

if (document.compoundintform.cyrs.value != "") {

princ = document.compoundintform.sav_amt.value;

ratepc = document.compoundintform.sav_int.value;

years = document.compoundintform.cyrs.value;

rate = ratepc / 100;

power = Math.pow((1 + rate), years);

totalearn = Math.round(princ * power * 100) / 100;

document.compoundintform.sav_growth.value = Math.round((totalearn - princ) * 100) / 100;

document.compoundintform.sav_total_pi.value = Math.round((totalearn) * 100) / 100;

}

}



}