var OPAC = {  DEFAULT_DETAILS_HEIGHT: 150 };

function toggleOptions() {
  if($('search_options').getStyle("display") != "block") {
    $('search_options').setStyle({ display: "block" });
    $$('#advanced a')[0].update("Less Options «");
    $('start_form').setStyle({ height: "100px" });
  } else {
    $('search_options').hide();
    $$('#advanced a')[0].update("More Options »");
    $('start_form').setStyle({ height: "80px" });
  }
}
function init() {
  if(!Prototype.Browser.IE)
    $('nus_logo').setAttribute("src", "images/nus_logo_t.png");
  $('q').focus();
}

Event.observe(document, "contentloaded", function() {
  $('submit_button').observe("click", function(event) {
    window.location.href = window.location.href.replace(/[?#].*$/, '').replace(/\/[^\/]*$/, '/') + "search.rhtml#"+$('start_form').serialize()+"&h="+OPAC.DEFAULT_DETAILS_HEIGHT;
  });
  $('start_form').observe("submit", function(event) {
    window.location.href = window.location.href.replace(/[?#].*$/, '').replace(/\/[^\/]*$/, '/') + "search.rhtml#"+$('start_form').serialize()+"&h="+OPAC.DEFAULT_DETAILS_HEIGHT;
  });
});