function computeForm(form){ basicedit(); pass=1; ir = replacePct(document.form.ir.value); str=replaceChars(document.form.p.value); str = replaceChar(str); p = replaceChars(document.form.p.value); p = replaceChar(p); if (str > 10000000){ alert ("loan amount must be less than 10000000 "); pass = 0; } if (str < 1000){ alert ("loan amount must be greater than 1000 "); pass = 0; } str=replacePct(document.form.ir.value); if (str > 20){ alert ("interest rate must not be greater than 20 percent "); document.form.ir.value = 20; pass = 0; } if (str < 1 ){ alert ("interest rate must be greater than 1 percent "); document.form.ir.value = 1; pass = 0; } str=document.form.y.value; if (str > 360){ alert ("number of payments cannot exceed 360") pass = 0; } if (str < 70){ alert ("number of payments must exceed 70") pass = 0; } document.form.y.value=parseInt(str); if (checkForm(p) && checkForm(ir) && checkForm(document.form.y.value) && (pass==1)) { amortize(document.form); } } function amortize(form) { with (Math) { var yr=parseFloat(form.ir.value); var tm=parseInt(form.y.value); var amt=parseFloat(p); var amt1=amt; var amtd = formatCurrency(amt); var mr=yr/1200; var r=yr/12; var mr1=pow((parseFloat(1)+parseFloat(mr)),tm); var rowStyle; var auxWinWidth = 380; var altStyleSheet = ""; var fntSzsz = new Array(); if (typeof getActiveStyleSheet == "function") { altStyleSheet = getActiveStyleSheet() == "small" ? altStyleSheet : getActiveStyleSheet(); fntSzsz = altStyleSheet == "medium" ? new Array("14","12",415) : new Array("16","14",430); } var tempAmortStr = "GMAC - Amortization Schedule Results"; tempAmortStr += ""; tempAmortStr += ""; tempAmortStr += "\n"; tempAmortStr += "\n
"; tempAmortStr += "\n
"; tempAmortStr += "\n
"; tempAmortStr += " Results:"; tempAmortStr += " print this page"; tempAmortStr += "\n
"; tempAmortStr += "\n"; tempAmortStr += "\n"; tempAmortStr += ""; tempAmortStr += ""; for (var j=1; j<=tm; j++) { m2=""+j; int1=amt1*(r/100); p=(mr1*amt*mr)/(mr1-1); q=(amt1+int1)-p; amt1=p-int1; if (q<1) { q="0.00";} p2=""+p; pos=p2.indexOf("."); if (pos != "-1") { p2=p2.substring(0,pos+3); } else { p2 = p2 + ".00";} int2=""+int1;pos=int2.indexOf("."); if (pos != "-1") { int2=int2.substring(0,pos+3); } else { int2=int2+".00";} amt2=""+amt1;pos=amt2.indexOf("."); if (pos != "-1"){ amt2=amt2.substring(0,pos+3); } else { amt2=amt2+".00";} q2=""+q;pos=q2.indexOf("."); if (pos != "-1") { q2=q2.substring(0,pos+3); } else { q2=q2+".00";} p2 = formatCurrency(p2); int2 = formatCurrency(int2); amt2 = formatCurrency(amt2); q2 = formatCurrency(q2); rowStyle = j%2 == 0 ? "altColor1":"altColor2"; tempAmortStr += "\n"; tempAmortStr += ""; tempAmortStr += ""; tempAmortStr += ""; tempAmortStr += "\n"; amt1=q; } tempAmortStr += "\n"; tempAmortStr +="
Payment NumberPayment AmountInterest AmountPrincipal ReductionBalance Due
"+m2+""+p2+""+int2+""+amt2+""+q2+"
"+tm+" months to pay off " + amtd +" at " + yr + "%
Some rounding of values may have occurred.

"; newWindow=window.open("","","height=500,width="+auxWinWidth+",scrollbars") newWindow.document.write(tempAmortStr); newWindow.document.close(); return false; } } function replaceChar(entry) { out = "$"; add = ""; temp = "" + entry; while (temp.indexOf(out)>-1) { pos= temp.indexOf(out); temp = "" + (temp.substring(0, pos) + add + temp.substring((pos + out.length), temp.length)); } return temp; } function replacePct(entry) { out = "%"; add = ""; temp = "" + entry; while (temp.indexOf(out)>-1) { pos= temp.indexOf(out); temp = "" + (temp.substring(0, pos) + add + temp.substring((pos + out.length), temp.length)); } return temp; } function replaceChars(entry) { out = ","; add = ""; temp = "" + entry; while (temp.indexOf(out)>-1) { pos= temp.indexOf(out); temp = "" + (temp.substring(0, pos) + add + temp.substring((pos + out.length), temp.length)); } return temp; } function formatCurrency(num) { num=replaceChar(num); num=replaceChars(num); if ( checkForm(num)); { num = num.toString().replace(/$|,/g,''); if(isNaN(num)) num = "0"; cents = Math.floor((num*100+0.5)%100); num = Math.floor(num).toString(); if(cents < 10) cents = "0" + cents; for (var i = 0; i < Math.floor((num.length-(1+i))/3); i++) num = num.substring(0,num.length-(4*i+3))+','+num.substring(num.length-(4*i+3)); return ('$' + num + '.' + cents); } } function basicedit() { if (!IsMoney(document.form.p.value) || document.form.p.value.length ==0) document.form.p.value='$125,000'; if (!IsNumber(document.form.y.value) || document.form.y.value.length ==0) document.form.y.value='360'; if (!IsPct(document.form.ir.value) || document.form.ir.value.length ==0) document.form.ir.value='7.5%'; } function IsMoney(val) { var number="0123456789$,."; for (var i=0;i "9")) isNum = false;{ } } if ((isNum == false) || (toCheck.length == 0) || (toCheck == null)) { alert("Please enter only numerical data in all fields."); return false; } else { return true; } } function getRelPath(contextRoot) { var imgPath= ""; var arDirectories = location.pathname.split("/"); for (var i=1; i