//

//////////////////////////////////////////////////////////////////////
// Form Functions
//////////////////////////////////////////////////////////////////////

function formNav(action) {
	var f = $('main_form');
	var a = $('form_nav_action');
	a.value = action;
	f.submit();
}

//////////////////////////////////////////////////////////////////////
// Special Functions for formatting pages in forms etc.
//////////////////////////////////////////////////////////////////////

function checkboxShowHide(checkboxName, checkedOn) {
	var args = arguments;
	var B = checkedOn ? $(checkboxName).checked : !$(checkboxName).checked;
	var disp = B ? '' : 'none';
	for (i=2; i<args.length; i++) {
		try	{
			$(args[i]).style.display = disp;
		}
		catch (e) {
		}
	}
}


function clearAllInputsInside(elementName) {
	var elems;
	var nodes;

	// Clear all INPUTS
	elems = $(elementName).getElementsByTagName('input');
	for (i=0; i<elems.length; i++) {
		switch (elems[i].type) {
			case 'text'    : elems[i].value = ''; break;
			case 'checkbox': elems[i].checked = false; break;
			case 'radio'   : elems[i].selected = false; break;
		}
	}
	//Clear all SELECT box options
	elems = $(elementName).getElementsByTagName('select');
	for (i=0; i<elems.length; i++) {
		var nodes = $A(elems[i].getElementsByTagname('option'));
		nodes.each(function(node){ node.selected = false; });
	}
}

function sameAsAbove(prefix, fieldname) {
	var checkboxName = prefix + 'sameasabove';
	var elementName = prefix + fieldname;
	checkboxShowHide(checkboxName, false, elementName);
	if (!$(checkboxName).checked) {
		clearAllInputsInside(elementName);
	}
}


//////////////////////////////////////////////////////////////////////
// DHTML Menu Code
//////////////////////////////////////////////////////////////////////

//var _dynarch_menu_url = 'js/hmenu/';

function initMenus() {
	//Init Horizontal menus
	var bContinue = true;
	for (var i=0; bContinue; i++) {
		if ($('hMenu'+i)) {
			DynarchMenu.setup('hMenu'+i, { electric: true });
		} else bContinue = false;
	}

	//Init Vertical menus
	bContinue = true;
	for (var i=0; bContinue; i++) {
		if ($('vMenu'+i)) {
			DynarchMenu.setup('vMenu'+i, { vertical: true, electric: true });
		} else bContinue = false;
	}
	
}

//////////////////////////////////////////////////////////////////////
// STYLE SHEET ACCESSIBILITY FUNCTIONS!
//////////////////////////////////////////////////////////////////////

function fontsizeup() {
  active = getActiveStyleSheet();
  switch (active) {
    case 'A--' : 
      setActiveStyleSheet('A-');
      break;
    case 'A-' : 
      setActiveStyleSheet('A');
      break;
    case 'A' : 
      setActiveStyleSheet('A+');
      break;
    case 'A+' : 
      setActiveStyleSheet('A++');
      break;
    case 'A++' :
      break;
    default :
      setActiveStyleSheet('A-');
      break;
  }
}

function fontsizedown() {
  active = getActiveStyleSheet();
  switch (active) {
    case 'A++' : 
      setActiveStyleSheet('A+');
      break;
    case 'A+' : 
      setActiveStyleSheet('A');
      break;
    case 'A' : 
      setActiveStyleSheet('A-');
      break;
    case 'A-' : 
      setActiveStyleSheet('A--');
      break;
    case 'A--' : 
       break;
    default :
      setActiveStyleSheet('A-');
      break;
  }
}

function setActiveStyleSheet(title) {
  var i, a, main;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
      a.disabled = true;
      if(a.getAttribute("title") == title) a.disabled = false;
    }
  }
}

function getActiveStyleSheet() {
  var i, a;
  for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
    if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
  }
  return null;
}

function getPreferredStyleSheet() {
  return ('A-');
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}


//********************************************************
//from http://www.phpied.com/javascript-include/
//********************************************************
var included_files = new Array();

function include_once(script_filename) {
	if (!in_array(script_filename, included_files)) {
		included_files[included_files.length] = script_filename;
		include_dom(script_filename);
	}
}

function in_array(a, value) {
	for (var i=0; i<a.length; i++)
		if (a[i] == value) return true;
	return false;
}

function include_dom(script_filename) {
	var file;
	var html_doc = document.getElementsByTagName('head').item(0);
	t = script_filename.substring(script_filename.lastIndexOf('.') + 1);
	if (t == 'js') {
		file = document.createElement('script');
		file.setAttribute('language','javascript');
		file.setAttribute('type','text/javascript');
		file.setAttribute('src',script_filename);
	} else if (t == 'css') {
		file = document.createElement('link');
		file.setAttribute('rel','stylesheet');
		file.setAttribute('type','text/css');
		file.setAttribute('href',script_filename);
	}
	html_doc.appendChild(file);
	return false;
}

function include_dom(script_filename) {
    var html_doc = document.getElementsByTagName('head').item(0);
    var js = document.createElement('script');
    js.setAttribute('language', 'javascript');
    js.setAttribute('type', 'text/javascript');
    js.setAttribute('src', script_filename);
    html_doc.appendChild(js);
    return false;
}

window.onload = function(e) {
  initMenus();
  var cookie = readCookie("style");
  var title = cookie ? cookie : getPreferredStyleSheet();
  setActiveStyleSheet(title);
}

window.onunload = function(e) {
  var title = getActiveStyleSheet();
  createCookie("style", title, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
  title = getPreferredStyleSheet();
}



//**************************************************
//* Key Handling events ****************************
//**************************************************

function getKeyCharCode(event) {
	var key = null;
	if (window.event) { //ie
		key = window.event.keyCode;
	} else if (event.which) {
		key = event.which;
	}
	return key;
}

function onEnterKey(event, action) {
	if (getKeyCharCode(event) != 13) { //13 = VK_ENTER
		return true;
	} else {
		setTimeout(action, 10);
		return false;
	}
}