// Calculator of cash back
<!-- Begin
function calcb(form){
var comm      = .03;  // seller commission %
var percent15 = .15;
var percent20 = .20;
var percent30 = .30;
var percent40 = .40;
var percent50 = .50;

var percent = 0;

var x ="";
var y ="";
var ok = 0;
var pprice = form.price.value;
var scomm = form.commission.value;
var brebate = form.rebatepayments.value;
var incomplete = "The purchase price is blank. Please try again.";
var re = /,/g;

pprice = pprice.replace(re, "");

if (pprice != "") { 
        x = (form.commission.value = (pprice * comm)); ok++
	if (pprice <= 99999)                              { percent = percent15; 
	} else if ((pprice >= 100000)&&(pprice <= 199999)){ percent = percent20; 
	} else if ((pprice >= 200000)&&(pprice <= 299999)){ percent = percent30;
	} else if ((pprice >= 300000)&&(pprice <= 399999)){ percent = percent40;
	} else if  (pprice >= 400000)                     { percent = percent50;
	}
   form.rebatepayments.value = ((pprice * comm) * percent); y = (form.rebatepercent.value = (percent * 100)); 
   }

if (!ok) alert(incomplete); // no purchase price entered
} 

// End -->