Building an AJAX currency converter with PHP, jQuery and Google

Amount: From: Euro - EUR United States Dollars - USD United Kingdom Pounds - GBP Canada Dollars - CAD Australia Dollars - AUD Japan Yen - JPY India Rupees - INR New Zealand Dollars - NZD Switzerland Francs - CHF South Africa Rand - ZAR Algeria Dinars - DZD Argentina Pesos - ARS Australia Dollars - AUD Bahrain Dinars - BHD Brazil Reais - BRL Bulgaria Leva - BGN Canada Dollars - CAD Chile Pesos - CLP China Yuan Renminbi - CNY RMB (China Yuan Renminbi) - CNY Colombia Pesos - COP Costa Rica Colones - CRC Croatia Kuna - HRK Czech Republic Koruny - CZK Denmark Kroner - DKK Dominican Republic Pesos - DOP Egypt Pounds - EGP Estonia Krooni - EEK Euro - EUR Fiji Dollars - FJD Hong Kong Dollars - HKD Hungary Forint - HUF Iceland Kronur - ISK India Rupees - INR Indonesia Rupiahs - IDR Israel New Shekels - ILS Jamaica Dollars - JMD Japan Yen - JPY Jordan Dinars - JOD Kenya Shillings - KES Korea (South) Won - KRW Kuwait Dinars - KWD Lebanon Pounds - LBP Malaysia Ringgits - MYR Mauritius Rupees - MUR Mexico Pesos - MXN Morocco Dirhams - MAD New Zealand Dollars - NZD Norway Kroner - NOK Oman Rials - OMR Pakistan Rupees - PKR Peru Nuevos Soles - PEN Philippines Pesos - PHP Poland Zlotych - PLN Qatar Riyals - QAR Romania New Lei - RON Russia Rubles - RUB Saudi Arabia Riyals - SAR Singapore Dollars - SGD Slovakia Koruny - SKK South Africa Rand - ZAR South Korea Won - KRW Sri Lanka Rupees - LKR Sweden Kronor - SEK Switzerland Francs - CHF Taiwan New Dollars - TWD Thailand Baht - THB Trinidad and Tobago Dollars - TTD Tunisia Dinars - TND Turkey Lira - TRY United Arab Emirates Dirhams - AED United Kingdom Pounds - GBP United States Dollars - USD Venezuela Bolivares - VEB Vietnam Dong - VND Zambia Kwacha - ZMK To: United States Dollars - USD United Kingdom Pounds - GBP Canada Dollars - CAD Australia Dollars - AUD Japan Yen - JPY India Rupees - INR New Zealand Dollars - NZD Switzerland Francs - CHF South Africa Rand - ZAR Algeria Dinars - DZD Argentina Pesos - ARS Australia Dollars - AUD Bahrain Dinars - BHD Brazil Reais - BRL Bulgaria Leva - BGN Canada Dollars - CAD Chile Pesos - CLP China Yuan Renminbi - CNY RMB (China Yuan Renminbi) - CNY Colombia Pesos - COP Costa Rica Colones - CRC Croatian Kuna - HRK Czech Republic Koruny - CZK Denmark Kroner - DKK Dominican Republic Pesos - DOP Egypt Pounds - EGP Estonia Krooni - EEK Euro - EUR Fiji Dollars - FJD Hong Kong Dollars - HKD Hungary Forint - HUF Iceland Kronur - ISK India Rupees - INR Indonesia Rupiahs - IDR Israel New Shekels - ILS Jamaica Dollars - JMD Japan Yen - JPY Jordan Dinars - JOD Kenya Shillings - KES Korea (South) Won - KRW Kuwait Dinars - KWD Lebanon Pounds - LBP Malaysia Ringgits - MYR Mauritius Rupees - MUR Mexico Pesos - MXN Morocco Dirhams - MAD New Zealand Dollars - NZD Norway Kroner - NOK Oman Rials - OMR Pakistan Rupees - PKR Peru Nuevos Soles - PEN Philippines Pesos - PHP Poland Zlotych - PLN Qatar Riyals - QAR Romania New Lei - RON Russia Rubles - RUB Saudi Arabia Riyals - SAR Singapore Dollars - SGD Slovakia Koruny - SKK South Africa Rand - ZAR South Korea Won - KRW Sri Lanka Rupees - LKR Sweden Kronor - SEK Switzerland Francs - CHF Taiwan New Dollars - TWD Thailand Baht - THB Trinidad and Tobago Dollars - TTD Tunisia Dinars - TND Turkey Lira - TRY United Arab Emirates Dirhams - AED United Kingdom Pounds - GBP United States Dollars - USD Venezuela Bolivares - VEB Vietnam Dong - VND Zambia Kwacha - ZMK