function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		prime_home_over = newImage("images/navvy/prime-home-over.gif");
		about_prime_over = newImage("images/navvy/about-prime-over.gif");
		building_info_over = newImage("images/navvy/building-info-over.gif");
		prime_plant_over = newImage("images/navvy/prime-plant-over.gif");
		get_a_price_over = newImage("images/navvy/get-a-price-over.gif");
		gallery_over = newImage("images/navvy/gallery-over.gif");
		marine_hurricane_over = newImage("images/navvy/marine-hurricane-over.gif");
		prime_clearance_over = newImage("images/navvy/prime-clearance-over.gif");
		preloadFlag = true;
	}
}


var form = "";
var submitted = false;
var error = false;
var error_message = "";

function check_input(field_name, field_size, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == '' || field_value.length < field_size) {
      error_message = error_message + "\n* " + message;
      error = true;
    }
  }
}

function check_radio(field_name, message) {
  var isChecked = false;

  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var radio = form.elements[field_name];

    for (var i=0; i<radio.length; i++) {
      if (radio[i].checked == true) {
        isChecked = true;
        break;
      }
    }

    if (isChecked == false) {
      error_message = error_message + "\n* " + message;
      error = true;
    }
  }
}

function check_checkbox(field_name, message) {
  var isChecked = false;

  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var box = form.elements[field_name];

    if (box.checked == false) {
      error_message = error_message + "\n* " + message;
      error = true;
    }
  }
}

function check_select(field_name, field_default, message) {
  if (form.elements[field_name] && (form.elements[field_name].type != "hidden")) {
    var field_value = form.elements[field_name].value;

    if (field_value == field_default) {
      error_message = error_message + "\n* " + message;
      error = true;
    }
  }
}

function check_password(field_name_1, field_name_2, field_size, message_1, message_2) {
  if (form.elements[field_name_1] && (form.elements[field_name_1].type != "hidden")) {
    var password = form.elements[field_name_1].value;
    var confirmation = form.elements[field_name_2].value;

    if (password == '' || password.length < field_size) {
      error_message = error_message + "\n* " + message_1;
      error = true;
    } else if (password != confirmation) {
      error_message = error_message + "\n* " + message_2;
      error = true;
    }
  }
}

function check_password_new(field_name_1, field_name_2, field_name_3, field_size, message_1, message_2, message_3) {
  if (form.elements[field_name_1] && (form.elements[field_name_1].type != "hidden")) {
    var password_current = form.elements[field_name_1].value;
    var password_new = form.elements[field_name_2].value;
    var password_confirmation = form.elements[field_name_3].value;

    if (password_current == '' || password_current.length < field_size) {
      error_message = error_message + "\n* " + message_1;
      error = true;
    } else if (password_new == '' || password_new.length < field_size) {
      error_message = error_message + "\n* " + message_2;
      error = true;
    } else if (password_new != password_confirmation) {
      error_message = error_message + "\n* " + message_3;
      error = true;
    }
  }
}