function validEMI(emi)
{
var err=0;
if(emi.loan.value=="")
{
err=1;
alert("Enter the Loan amount");
emi.loan.focus();
return false;
}
if(isNaN(emi.loan.value)){
	alert("Enter only numeric value in Loan amount");
	emi.loan.focus();
	return false;
}

if(emi.tenor.value=="")
{
err=1;
alert("Enter the Tenor");
emi.tenor.focus();
return false;
}
if(isNaN(emi.tenor.value)){
	alert("Enter only numeric value in Tenor");
	emi.tenor.focus();
	return false;
}

if(emi.roi.value=="")
{
err=1;
alert("Enter the Rate of Interest");
emi.roi.focus();
return false;
}
if(isNaN(emi.roi.value)){
	alert("Enter only numeric value in Rate of interest");
	emi.roi.focus();
	return false;
}

var t=emi.tenor.value*12;
var r=emi.roi.value/(12*100);
var den =1- Math.pow(1 + r	,-t)
var em=(emi.loan.value * r)/den;
var installment=Math.round(em);
document.getElementById('em1').innerHTML=installment;
return false;
}