// js config object. used to store global vars
var CONFIG = {
	img_path : "/icons/" // global path to site image assets
};


// -----------------------------------------------------------------------------


// used in search results pages
function toggleQueryDetails() {
	if (!getDomObj('query-details-toggle') || !getDomObj('query-details')) return;

	var qd = DOM_OBJECTS['query-details'];
	var qdt = DOM_OBJECTS['query-details-toggle'];

	// default, non-persistent state of page is hidden
	if ( (qd.style.display == 'none') || (qd.style.display == '') ) {
		qd.style.display = 'block';
		qdt.style.backgroundImage = 'url(' + CONFIG['img_path'] + 'icon.circle.arrow.dn.gif)';
		qdt.innerHTML = 'Hide Query Details';

	} else {
		qd.style.display = 'none';
		qdt.style.backgroundImage = 'url(' + CONFIG['img_path'] + 'icon.circle.plus.gif)';
		qdt.innerHTML = 'Show Query Details';
	}

	qdt.blur();
} // END: toggleQueryDetails()


// -----------------------------------------------------------------------------


function uncheckSelectAll(current_checkbox, checkbox_name) {
	current_checkbox.form.elements[checkbox_name].checked = false;
} // END: uncheckSelectAll()


function toggleSelectAllInFieldset(checkbox) {
	// bail out if browser isn't capable of simple DOM methods...
	// this function is just necessary for the UI to update, anyway
	if (!document.getElementsByTagName) return;

	// if we are unchecking the checkbox, then bail out... we don't need to do anything
	if (!checkbox.checked) return;

	var fieldset = checkbox.parentNode;
	var all_checkboxes = fieldset.getElementsByTagName('INPUT');

	for (var i=0; i < all_checkboxes.length; i++) {
		if (all_checkboxes[i] == checkbox) continue;
		// all_checkboxes[i].checked = checkbox.checked;
		all_checkboxes[i].checked = false;
	}
} // END: toggleSelectAllInFieldset()


// -----------------------------------------------------------------------------


// attach this to the onfocus of an INPUT or TEXTAREA, passing the 'this' object as the argument
function textFieldStoreAndClear(el) {
	el.originalText = (el.originalText == null) ? el.value : el.originalText;
	if (el.value == el.originalText) el.value = '';
}

// attach this to the onblur of an INPUT or TEXTAREA, passing the 'this' object as the argument
function textFieldRestore(el) {
	el.value = (el.value == '') ? el.originalText : el.value;
}

// takes title attribute from INPUTs with .ShowTitle and sticks it in the value attrib.
addWindowEvent('onload', function(){
	if (!document.getElementById) return;

	var all_inputs = document.getElementsByTagName('INPUT');
	var temp_class = "";

	for (var i=0; i < all_inputs.length; i++) {
		temp_class = " " + all_inputs[i].className;
		if (temp_class == " ") continue;

		if ( (temp_class.indexOf(" ShowTitle") > 0) && (all_inputs[i].value == "") ) {
			all_inputs[i].value = all_inputs[i].title;
			all_inputs[i].onfocus = function() { textFieldStoreAndClear(this) };
			all_inputs[i].onblur = function() { textFieldRestore(this) };
		}

		temp_class = "";
	}
});


// -----------------------------------------------------------------------------


var DOM_OBJECTS = []; // hash to store frequently used DOM objects

// utility function to get DOM objects
function getDomObj(object_name) {
	// bail out if browser is not capable
	if (!document.getElementById) return false;

	// return true if object was already fetched
	if (DOM_OBJECTS[object_name]) return true;

	// get the object and return the result of the get
	return (DOM_OBJECTS[object_name] = document.getElementById(object_name)) ? true : false;
} // END: getDomObj


// -----------------------------------------------------------------------------


// extension of an idea from simon willison
// http://simon.incutio.com/archive/2004/05/26/addLoadEvent
// adds function call to an arbitrary window event trigger
function addWindowEvent(event_name, function_to_add) {
  var current_event = window[event_name];

  if (typeof(current_event) != 'function') {
    window[event_name] = function_to_add;

  } else {
    window[event_name] = function() {
      current_event();
      function_to_add();
    };
  }
} // END: addWindowEvent()


// =============================================================================


var DEBUG = true;
var DEBUG_MESSAGE_TYPES = ["ERROR", "WARNING", 'STATUS'];
var debug_win;

function debug(message_type, message) {
	if (DEBUG && (DEBUG_MESSAGE_TYPES.join(" ").indexOf(message_type) > -1 )) {
		if (!debug_win) {
			debug_win = window.open("","","");
			debug_win.document.open();
		}
		message = message.replace(/</g, "&lt;");
		message = message.replace(/>/g, "&gt;");
		
		try {
			debug_win.document.write("");
		} catch(e) {
			debug_win = window.open("","","");
			debug_win.document.open();			
		}

		debug_win.document.write("<h1 style='font-size: 80%; margin:0;border-bottom: 1px solid #CCC;'>" + message_type  + "</h1>");
		debug_win.document.write("<pre style='font-size: 75%; margin: .5em 0 2em 0;'>" + message + "</pre>");
	}
} // END: debug()