function preload(name, src) {
  var img = document.getElementById(name);
  if (img) img.roSrc = src;  
}

function rollover(name) {
  img = document.getElementById(name);
  if (!img.oSrc) img.oSrc = img.src;
  if (img.roSrc) img.src = img.roSrc;
}

function rollout(name) {
  img = document.getElementById(name);
  if (img.oSrc) img.src = img.oSrc;
}

function formAction(form, action, module, param) {
  if (module) {
    form.action += '/' + module;
  }
  form.action += '/' + action;
  if (param) {
    form.param.value = param;
  }
  form.submit();
}

function enter(event, form, action) {
  if (!event) event = window.event;
  if (event.keyCode != 13) return;
  form.action += '/' + action;
  form.submit();
}

function confirmAction(form, action, text, module, param) {
	if (confirm(text)) formAction(form, action, module, param);
}