paypal fee calculator

function get_float(string) { var to_return = parseFloat(string); if (typeof to_return == 'undefined') { to_return = 0.00 } if (isNaN(to_return)) { to_return = 0.00 } to_return = (to_return / 100) * 100; return to_return } function get_key_code(e) { if (typeof e == "undefined") { e = window.event } if (e.keyCode) { return e.keyCode } else if (e.which) { return e.which } else { return e.charCode } } function has_selection(ele) { var txt = '', len = 0, start = 0, end = 0; if (document.selection) { txt = document.selection.createRange().text } else if (window.getSelection) { txt = window.getSelection() } else if (document.getSelection) { txt = document.getSelection() } else { return false } if (ele.selectionStart) { start = ele.selectionStart } if (ele.selectionEnd) { end = ele.selectionEnd } len = end - start; if (len > 0) { return true } else if (typeof txt == "undefined") { return false } else if (isNaN(txt)) { return false } else if (txt.length > 0) { return true } else { return false } } function textbox_onkeypress(e) { if (typeof e == "undefined") { e = window.event } var keycode = get_key_code(e); var to_return = true; switch (keycode) { case 8: break; case 9: break; case 13: break; case 37: case 39: break; case 38: if (this.value != '') { this.value = (get_float(this.value) + 0.5).toFixed(2) } break; case 40: if (get_float(this.value) >= 0.5) { this.value = (get_float(this.value) - 0.5).toFixed(2) } else { this.value = '0.00' } if (this.id == 'to_receive') { rp_calc() } else if (this.id == 'if_you_receive') { p_calc() } break; case 46: if (this.value.indexOf(".") != -1) { if (has_selection(this) == false) { to_return = false } } break; case 48: case 49: case 50: case 51: case 52: case 53: case 54: case 55: case 56: case 57: if ((this.id != 'paypal_fee_percent')) { if (this.value.length >= 3) { if (this.value.substr(this.value.length - 3, 1) == '.') { if (has_selection(this) == false) { to_return = false } } } } break; default: to_return = false } if ((!e.which) && (keycode == 46)) { to_return = true } if ((typeof e.which == "undefined") && (keycode == 46) && (this.value.indexOf(".") != -1) && (has_selection(this) == false)) { to_return = false } e.returnValue = to_return; return to_return } function set_rate(percent, fixed, sign, name) { document.forms['ppc'].elements['paypal_fee_percent'].value = percent; document.forms['ppc'].elements['paypal_fee_fixed'].value = fixed; document.getElementById('currency_sign').innerHTML = sign; document.getElementById('currency_name').innerHTML = name; document.getElementById('currency_symbol_1').innerHTML = sign; document.getElementById('currency_symbol_2').innerHTML = sign; document.getElementById('currency_symbol_3').innerHTML = sign; document.getElementById('currency_symbol_4').innerHTML = sign; document.getElementById('currency_symbol_5').innerHTML = sign } function figure_fees(item_price, fee_percentage, fixed_fee) { var the_fee_percentage = fee_percentage / 100; the_fee_percentage = the_fee_percentage.toFixed(4); the_fee_percentage = get_float(the_fee_percentage); var to_return = item_price * the_fee_percentage + fixed_fee; to_return = Math.round(to_return * 100) / 100; to_return = to_return.toFixed(2); to_return = get_float(to_return); if (to_return > item_price) { to_return = item_price } return to_return } function p_calc() { if (document.forms['ppc'].elements['if_you_receive'].value != '') { var amount_sent = get_float(document.forms['ppc'].elements['if_you_receive'].value); if (amount_sent == 0) { document.forms['ppc'].elements['paypal_fees'].value = document.forms['ppc'].elements['you_would_receive'].value = '0.00' } else { var the_paypal_fees = figure_fees(amount_sent, get_float(document.forms['ppc'].elements['paypal_fee_percent'].value), get_float(document.forms['ppc'].elements['paypal_fee_fixed'].value)); document.forms['ppc'].elements['paypal_fees'].value = the_paypal_fees.toFixed(2); var amount_after_fees = amount_sent - get_float(document.forms['ppc'].elements['paypal_fees'].value); if (amount_after_fees < 0) { amount_after_fees = 0 } document.forms['ppc'].elements['you_would_receive'].value = amount_after_fees.toFixed(2) } } else { document.forms['ppc'].elements['paypal_fees'].value = ''; document.forms['ppc'].elements['you_would_receive'].value = '' } } function rp_calc(src) { if (document.forms['ppc'].elements['to_receive'].value != '') { var desired_amount = get_float(document.forms['ppc'].elements['to_receive'].value); if (desired_amount == 0) { document.forms['ppc'].elements['a_person_would'].value = '0.00' } else { var a_person_must_send = (desired_amount + get_float(document.forms['ppc'].elements['paypal_fee_fixed'].value)) / (1 - (get_float(document.forms['ppc'].elements['paypal_fee_percent'].value) / 100).toFixed(4)); document.forms['ppc'].elements['a_person_would'].value = a_person_must_send.toFixed(2); document.forms['ppc'].elements['if_you_receive'].value = document.forms['ppc'].elements['a_person_would'].value; p_calc() } } else { if (src != 1) { document.forms['ppc'].elements['a_person_would'].value = ''; document.forms['ppc'].elements['if_you_receive'].value = '' } p_calc() } } if (window.addEventListener) { window.addEventListener("load", window_onload, false) } else if (window.attachEvent) { window.attachEvent("onload", window_onload) } function window_onload() { document.forms['ppc'].elements['to_receive'].onkeypress = textbox_onkeypress; document.forms['ppc'].elements['if_you_receive'].onkeypress = textbox_onkeypress; document.forms['ppc'].elements['paypal_fee_percent'].onkeypress = textbox_onkeypress; document.forms['ppc'].elements['paypal_fee_fixed'].onkeypress = textbox_onkeypress; document.forms['ppc'].elements['to_receive'].onkeyup = rp_calc; document.forms['ppc'].elements['if_you_receive'].onkeyup = p_calc; document.forms['ppc'].elements['to_receive'].focus() }