function findObj(n, d) {
         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=findObj(n,d.layers[i].document);
         if(!x && d.getElementById) x=d.getElementById(n); return x;
       }
       function toCur(val,cur) {
       val=(val+"").replace(/,/g,"");
       return  ((cur? cur:"") + 
       (Math.round(val*100) + 
       (val<0?-0.1:+0.1))/ 100).replace(/(.*.dd)d*/,'$1');
       }
       function calc() {
           var p = findObj('p').value;
           var i = findObj('i').value;
           var y = findObj('y').value;
 var numCheck = new RegExp(/^d+(?:.d{0,2})?$/);
           if (!numCheck.test(p) || !numCheck.test(i) || !numCheck.test(y)) {
               alert("Values must be numeric");
           }
           else {
               var iM = i/1200;
               var b = 1;
               var bM =  1+iM;
               for (i=0; i<y*12; i++) {
                   b = b * bM;
                 }
               mP = p*iM/(1-(1/b));
               findObj('amort').innerHTML = '';
               findObj('result').innerHTML = "Your Monthly Payment: " + toCur(mP,'$') + "<br><a href='javascript:;' onclick='genHTML(mP)'>Click for Amortization Table</a>";
           }
       }
       function genHTML() {
           var p = findObj('p').value;
           var i = findObj('i').value;
           var y = findObj('y').value;
           var tHTML = '';
 var tHTML = '<table width="100%"><tr><th>Month</th><th>Intrest Paid</th><th>Principal Paid</th><th>Balance</th></tr>';
           for (j=0; j<y*12; j++) {
               iP = p*i/1200;
               pP = mP-iP;
               bal= p-pP;
 tHTML += '<tr class="'+((j%2!=0) ? 'style1' : 'style2')+'"><td>'+eval(j+1)+'</td><td>'+toCur(iP,'$')+'</td><td>'+toCur(pP,'$')+'</td><td>'+toCur(bal,'$')+'</td></tr>'
               p=bal;
           }
           findObj('amort').innerHTML = tHTML;
       }
       window.onload = function () { findObj('p').focus(); findObj('p').select(); }