/* = TOP NAVIGATION JS
---------------------------------------------------------------
	control which submenu is showing in the navigation
	depending on which subdirectory we're in
---------------------------------------------------------------*/
function findLocation() {
	if(!document.getElementById) return false;
	if(!document.getElementsByTagName) return false;
	
	var url = new String(location);
	var urlArray = new Array();
	urlArray = url.split("/");
	var directory = urlArray[3];
	
	/* select the directory */
	switch(directory) {
		case "attractions":
			if(document.getElementById('nav-attractions'))
			var selectedNav = document.getElementById('nav-attractions');
			break;
		case "galleries":
			if(document.getElementById('nav-galleries'))
			var selectedNav = document.getElementById('nav-galleries');
			break;
		case "admission":
			if(document.getElementById('nav-admission'))
			var selectedNav = document.getElementById('nav-admission');
			break;
		case "visit":
			if(document.getElementById('nav-visit'))
			var selectedNav = document.getElementById('nav-visit');
			break;
		case "press_room":
			if(document.getElementById('nav-press'))
			var selectedNav = document.getElementById('nav-press');
			break;
		case "calendar":
			if(document.getElementById('nav-calendar'))
			var selectedNav = document.getElementById('nav-calendar');
			break;
		case "occasions":
			if(document.getElementById('nav-occasions'))
			var selectedNav = document.getElementById('nav-occasions');
			break;
		case "memberships":
			if(document.getElementById('nav-memberships'))
			var selectedNav = document.getElementById('nav-memberships');
			break;
		case "giving":
			if(document.getElementById('nav-giving'))
			var selectedNav = document.getElementById('nav-giving');
			break;
		case "store":
			if(document.getElementById('nav-store'))
			var selectedNav = document.getElementById('nav-store');
			break;
		default:
			break;
	}
	
	if(!parent) return false;
	/* change the current directory menu item to selected */
	if(!selectedNav) return false;
	if(selectedNav.className)
	{
		selectedNav.className += " selected";
	}
	else {
		selectedNav.className = "selected";
	}
}

addLoadEvent(findLocation);


/* = check body height
---------------------------------------------------------------
	If the content height is less than the window height
	then a different class is applied to the HTML tag
	to fix 100% hight div issues
---------------------------------------------------------------*/
function checkBodyHeight() {
	window.onresize = checkBodyHeight;
	
	var windowHeight = 0;
	var bodyHeight = 0;

  if( typeof( window.innerWidth ) == 'number' ) {
    //Non-IE
    windowHeight = window.innerHeight;
  } else if( document.documentElement && document.documentElement.clientHeight ) {
    //IE 6+ in 'standards compliant mode'
    windowHeight = document.documentElement.clientHeight;
  } else if( document.body && document.body.clientHeight ) {
    //IE 4 compatible
    windowHeight = document.body.clientHeight;
  }

	bodyHeight = document.getElementById('centered').offsetHeight;
	
	if(bodyHeight < windowHeight) {
		document.getElementsByTagName('html')[0].className = "hundred";
	}
}

addLoadEvent(checkBodyHeight);


/* = CLEAR FIELD
-------------------------------------------------
	Clears any input when clicked on if it contains
	its default value.  All that is required is
	that you put the class "clearDefault" on the
	input.
-------------------------------------------------*/

function clickClear() {
	if(!document.getElementsByTagName) return false;
	
	var inputs = document.getElementsByTagName("INPUT");
	
	for ( var i = 0; i < inputs.length; i++)
	{
		if(inputs[i].className.indexOf("clearDefault") != -1)
		{
			inputs[i].onclick = function() {
				if(this.value == this.defaultValue)
				{
					this.value = "";
				}
			}
			inputs[i].onfocus = function() {
				if(this.value == this.defaultValue)
				{
					this.value = "";
				}
			}
			inputs[i].onblur = function() {
				if(this.value == "")
				{
					this.value = this.defaultValue;
				}
			}
		}
	}
}

addLoadEvent(clickClear);


/* = EVENT HANDLER
---------------------------------------------------------------*/
function addLoadEvent(func) {
	var oldOnLoad = window.onload
	if (typeof window.onload != 'function') 
	{
		window.onload = func;
	}
	else {
		window.onload = function() {
			oldOnLoad();
			func();
		}
	}
}