$(document).ready(function(){
	$("#calculator").fadeIn("normal");
	$("#close_calc").click(function () {
    	$("#calculator").fadeOut("normal");
    });
});

function calculate(price){
	var cash = $('#cash').val();
	var rate = $('#rate').val();
	var term = $('#term').val();
	
	var v0 = (rate/100)/term;
	var v1 = price-cash;
	var v2 = Math.pow( (1 + v0), term);
	
	var result = '$'+Math.round( (v1 * v0 * v2) / (v2 - 1)) +'<span>/month</span>';
	//var result = '$'+((price-cash) + (rate/100))/term+'<span>/month</span>';
	$('#result').html(result);
}
//var result = '$'+Math.round((cash/term) + (rate/100)*term)+'<span>/month</span>';