function computeForm(form) {

    var pmt1 = form.payment.value;

    var pmt2 = form.payment.value / 2;

    var prin1 = form.principal.value;

    var prin2 = form.principal.value;

    var intPort1 = 0;

    var intPort2 = 0;

    var prinPort1 = 0;

    var prinPort2 = 0;

    var accumInt1 = 0;

    var accumPrin1 = 0;

    var accumInt2 = 0;

    var accumPrin2 = 0;

    var i = form.intRate.value;

    if (i > 1.0) {

        i = i / 100.0;

        form.intRate.value = i;

    }

    var i1  = i  / 12;

    var i2 = i / 26;

    var count1 = 0;

    var count2 = 0;

    while(prin1 > 0) {

        intPort1 = prin1 * i1;

        prinPort1 = pmt1 - intPort1;

        prin1 = prin1 - prinPort1;

        accumPrin1 = accumPrin1 + prinPort1;

        accumInt1 = accumInt1 + intPort1;

        count1 = count1 + 1;

     if(count1 > 600) {
        break;
        } else {
        continue;
        }

       }

if(count1 > 600) {
 alert("Using your entered terms you will never pay off this amount.  Please either lower the principal amount, lower the interest rate, or increase the payment amount.;")
        form.origInt.value = "";
        form.biwkInt.value = "";
        form.intSave.value = "";
        form.time.value = "";
        } else {

    form.origInt.value = "$" + parseInt(accumInt1,10);

    while(prin2 > 0) {

        intPort2 = prin2 * i2;

        prinPort2 = pmt2 - intPort2;

        prin2 = prin2 - prinPort2;

        accumPrin2 = accumPrin2 + prinPort2;

        accumInt2 = accumInt2 + intPort2;

        count2 = count2 + 1;

        if(count1 > 600) {break; } else {continue; }

       }
    
    form.biwkInt.value = "$" + parseInt(accumInt2,10);

    form.intSave.value = "$" + parseInt(accumInt1 - accumInt2,10);

    form.time.value = "In essence, what you are really doing is adding a 13th payment to your annual number of payments, and splitting it up between 26 bi-weekly payments. Which in your case means that by coughing up and extra $" + parseInt(pmt1 / 26,10) + " every two weeks you will pay off your mortgage in " + parseInt(count2 /26*12,10) + " months instead of the current " + count1 + " months, and save $" + parseInt(accumInt1 - accumInt2) + " in mortgage interest in the process.  Now I ask you, is there anything else you would rather spend your $" + parseInt(accumInt1 - accumInt2) + " on besides interest?";

   }
		
}



function clearForm(form)

{

    form.principal.value = "";

    form.payment.value = "";

    form.intRate.value = "";

    form.intSave.value = "";

    form.origInt.value = "";

    form.biwkInt.value = "";

    form.time.value = "";

}

function validate_contact(form){
	if (form.fname.value==''){
 	 alert('Please enter first name!');
	 return false;
 	}
	if (form.phone.value==''){
 	 alert('Please enter a telephone number!');
	 return false;
 	}
	if (form.email.value==''){
 	 alert('Please enter a valid email address!');
	 return false;
 	}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}