/* Function To Show Or Hide Content */
function blendoff(idname) {document.getElementById(idname).style.display = 'none';}
function blendon(idname) {document.getElementById(idname).style.display = 'block';}

/* Function To Switch Tab Styles */
function swichtabs(wert,tab1,tab2) {
	if (wert=='1') {
		document.getElementById(tab1).className='active_tab';
		document.getElementById(tab2).className='unactive_tab';
	} else if (wert=='2') {
		document.getElementById(tab1).className='unactive_tab';
		document.getElementById(tab2).className='active_tab';
	}
}

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

function showpay() {
	if ((document.calc.loan.value == null || document.calc.loan.value.length == 0) || (document.calc.months.value == null || document.calc.months.value.length == 0) || (document.calc.rate.value == null || document.calc.rate.value.length == 0)) {
		document.calc.pay.value = "Error! Please Try Again.";
 } else {
	 var princ = document.calc.loan.value;
	 var term  = document.calc.months.value;
	 var intr   = document.calc.rate.value / 1200;
	 document.calc.pay.value = roundNumber(princ * intr / (1 - (Math.pow(1/(1 + intr), term))),2);
	}
}