String.prototype.startsWith = function(c) {
  return c == this.charAt(0);
};
String.prototype.cleanCurrency = function() {
  return this == null ? 0.0 : this.replace(/[,\$]/g, '');
};
String.prototype.cleanPercent = function() {
  return this == null ? 0.0 : this.replace(/[%]/g, '');
};
String.prototype.toCurrency = function() {
  return this.startsWith('$') ? this : '$' + this;
};
function rotateImage(offset, photos, heights, widths, imageNode, numberNode) {
  var position = parseInt(numberNode.innerHTML) + offset;
  while (position < 1)  position += photos.length;
  while (position > photos.length)  position -= photos.length;
  if (document.images) {
    imageNode.src = photos[position - 1];
    imageNode.height = heights[position - 1];
    imageNode.width = widths[position - 1];
  }
  numberNode.innerHTML = '' + position;
}
function mapSale(map, longitude, latitude, address, price, bedbath, sqft, dom, imgUrl, height, width) {
  var point = new GPoint(longitude, latitude);
  var marker = new GMarker(point);
  var html = '<p>' + address + '</p>' +
             '<div style="width:50%;float:left;text-align:left;"><span style="font-size:125%;font-weight:bold;">' +
             price + '</span><br/>' + bedbath + '<br/>' + sqft +
             '<br/>days on mkt:&nbsp;' + dom + ' days' +
             '</div><div style="width:50%;float:right;"><img src="' + imgUrl + '" height="' + height + '" width="' +
             width + '" /></div>';
  GEvent.addListener(marker, 'click', function() {
    origCenter = map.getCenter();
    origZoom = map.getZoom();
    marker.openInfoWindowHtml(html, {maxWidth:250});
  });
  map.addOverlay(marker);
  return marker;
}
function bookmark(title) {
  if ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4)) {
    window.external.AddFavorite(window.document.location.href, title);
  } else if (navigator.appName == "Netscape") {
    window.sidebar.addPanel(title, window.document.location.href, "");
  } else {
    alert("Press CTRL-D (Netscape) or CTRL-T (Opera) to bookmark");
  }
}