var convert_handler = new currencyConvertHandler ();


/**
* SUB CATEGORY LOOKUP
**/
function currencyConvertRequest () {
  var amount = document.forms['convert'].elements['amount'];
  var currency = document.forms['convert'].elements['currency'];
  
  // tell the user
  var result_node = document.getElementById ('converter_result');
  result_node.nodeValue = 'Calculating...';
  
  // make the request
  queue.request ('GET', 'ajax_currency_convert.php?amount=' + escape(amount.value) + '&currency=' +
    escape(currency.value), convert_handler);
}

function currencyConvertHandler () {
  this.process = function (top_node) {
    var xml_result_node = top_node.getElementsByTagName ('result');
    xml_result_node = xml_result_node[0];
    
    var page_result_node = document.getElementById ('usd_result');
    page_result_node.style.display = 'block';
    
    var page_result_node = document.getElementById ('converter_result');
    page_result_node.firstChild.data = "$" + xml_result_node.getAttribute('amount');
  }
}