var site_root = 'http://www.nps.gov/webrangers/';


//	Browser d-tect
var w3c = (document.getElementById) ? true : false;
var isIE = (navigator.appVersion.indexOf("MSIE") != -1) ? true : false;
var isWin = (navigator.appVersion.indexOf("Windows") != -1) ? true : false;


//	Init variables - set to true on page to have them execute
var is_flash = false;
var is_flashnav = false;
var is_index = false;
var pw_key;
var pw_form;

if (w3c) {
	document.write('<style type="text/css">#flashContent { visibility: hidden; height: 450px; } </style>');
}


//	Init function
function init() {
	/* *************************************************** */
	/* ****************** Flash Control ****************** */
	if (hasRightVersion) {
		if (is_flashnav && is_flash) {
			insertFlash(flashnav_swf,130,415,"flashNavigator"); // Insert flashnav_swf
			setTimeout("runActivity()",1000); // Insert activity after 1000 milliseconds (1000 milliseconds = 1 second)
			
		} else	if (is_flashnav) {
			insertFlash(flashnav_swf,130,415,"flashNavigator");
			
		} else	if (is_flash) {
			runActivity();
		}
	} else {
		if (document.getElementById('flashContent')) {
			document.getElementById('flashContent').style.visibility = 'visible';
			document.getElementById('flashContent').style.height = 'auto';
		}
	}
	/* **************** End Flash Control **************** */
	/* *************************************************** */
	
	if (location.href.indexOf('levels.html') != -1) {
		setCookie('passedIntro','true');
	}
	
	if (is_index && getCookie('passedIntro') == 'true') {
		insertSkipIntroButton();
	}
	
	if (document.getElementById('moreInfoRight')) {
		addFeedbackListItem();
		var email_friend_link = document.getElementById('moreInfoRight').getElementsByTagName('A')[0];
		if (email_friend_link.lastChild.nodeValue = 'Email this activity to your friends') {
			var email_li = email_friend_link.parentNode;
			//document.getElementById('moreInfoRight').removeChild(email_li);
			var activity_name = document.getElementsByTagName('H2')[0].firstChild.nodeValue;
			//var html_2_php = email_friend_link.href.replace('.html','.php');
			//email_friend_link.href = html_2_php+'?activity_url='+location.href+'&activity_name='+activity_name;
			activity_name = activity_name.replace(/'/g,'');
			email_friend_link.href = 'http://data2.itc.nps.gov/rangers/emailfriend.cfm'+'?activity_url='+location.href+'&activity_name='+activity_name;
		}
	}
	
	if (document.getElementById('moreInfoLeft')) {
		setRelatedLinks();		
	}
	
	setLinks();
}

//	If browser is good, run onload function
if (w3c) { window.onload=init; }

//	Print code
function doPrint() {
	if (window.print) {
		window.print();
	} else {
		alert('To print this page, click on the File menu and choose Print \nor press Cntrl + P on your keyboard.');
	}
}

//	Check password on welcome.html
function loginCheck() {
	var login_field = document.getElementById('login');
	var pee_dub = 'park';
	if (login_field.value.toLowerCase() == pee_dub) {
		return true;
	} else {
		alert('Sorry, that password is incorrect!');
		login_field.value = '';
		login_field.focus();
		return false;
	}
}

//	Check form on emailfriend.cfm
function checkSpecialChars(string_obj) {
	var special_chars = new Array('#','&','"','\'',';');
	
	var special_chars_list = "";
	for (var cc=0; cc<special_chars.length; cc++) {
		if (cc == (special_chars.length-1)) {
			special_chars_list += special_chars[cc];
		} else {
			special_chars_list += special_chars[cc]+', ';
		}
	}
	
	for (var aa=0; aa<string_obj.length; aa++) {
		for (var bb=0; bb<special_chars.length; bb++) {
			if (string_obj[aa].value.indexOf(special_chars[bb]) != -1) {
				alert('Please remove special characters ('+special_chars_list+') from all entries.');
				return false;
			}
		}
	}
	return true;
	
}
function removeSpecialChars() {
	var input_fields = document.getElementsByTagName('INPUT');
	var textarea_fields = document.getElementsByTagName('TEXTAREA');
	
	if (checkSpecialChars(input_fields) && checkSpecialChars(textarea_fields)) {
		return true;
	} else {
		return false;
	}
}




function insertSkipIntroButton() {
	
	var infoBar_div = document.getElementById('infoBar');
	var infoBar_firstChild = infoBar_div.firstChild;
	//var infoBar_parent = infoBar_div.parentNode;
	
	//var new_infoBar = document.createElement('DIV');
	//new_infoBar.id = 'infoBar';
	
	var return_p = document.createElement('P');
	var return_text = document.createTextNode('Welcome back to WebRangers! You can review the introduction section again or go straight to the Levels page by clicking the button below.');
	
	return_p.appendChild(return_text);
	infoBar_div.insertBefore(return_p, infoBar_firstChild);
	
	var preed_elem = document.createElement('P');
	preed_elem.className = 'proceed';
	
	var skip_link = document.createElement('A');
	skip_link.href = 'levels.html';
	preed_elem.appendChild(skip_link);
	
	var link_text = document.createTextNode('Skip Intro Pages');
	skip_link.appendChild(link_text);
	
	//	var skip_img = document.createElement('IMG');
	//	skip_img.src = 'images/skip_intro.gif';
	//	skip_img.alt = 'Skip Intro Pages';
	//	skip_link.appendChild(skip_img);

	
	//infoBar_parent.replaceChild(new_infoBar,infoBar_div);
	
	//infoBar_div.appendChild(preed_elem);
	
	infoBar_div.insertBefore(preed_elem, infoBar_firstChild);
}

function setCookie(cookie_name,cookie_value) {
	
	//format expiry date
	cookie_date = new Date();
	cookie_date.setTime(cookie_date.getTime() + ( 365 *24*60*60*1000));

	document.cookie = cookie_name + '=' + cookie_value
		+ '; expires=' + cookie_date.toGMTString() 
		+ '; path=/';
}


function getCookie(cookie_name) {
	this_cookie = null;	
	
	if (document.cookie && document.cookie.indexOf(cookie_name) != -1) {
		this_cookie = document.cookie.split(cookie_name+'=');
		this_cookie = this_cookie[1].split(';');
	}
	// alert(font_cookie);
	
	return this_cookie;
}

function setLinks() {
	var all_links = document.getElementsByTagName('A');
	var default_params = 'toolbar=yes,status=yes,scrollbars=yes,resizable=yes,width=780,height=550';
	
	for (var bb=0; bb<all_links.length; bb++) {		
		if (all_links[bb].target.toLowerCase() == 'webrangerslink') {
			all_links[bb].onclick = function() {
				if (this.firstChild.nodeValue.toLowerCase() == 'how to use this site') {
					popupWindow(this.href, this.target, 'status=yes,scrollbars=yes,resizable=yes,width=675,height=400');
					return false;
				} else {
					popupWindow(this.href, this.target, default_params);
					return false;
				}
			}
		}
		if (all_links[bb].target.toLowerCase() == 'externallink') {
			all_links[bb].onclick = function() {
				if (confirm('You are about visit a page outside of the WebRangers website. Are you sure you want to continue?')) {
					popupWindow(this.href, this.target, default_params);
				}
				return false;
			}			
		}
	}
}

//	Create JavaScript pop-ups for related links at the bottom of pages
function setRelatedLinks() {
	var related_links_list = document.getElementById('moreInfoLeft');
	var related_links = related_links_list.getElementsByTagName('A');
	var window_params = 'location=yes,menubar=no,toolbar=yes,status=yes,scrollbars=yes,resizable=yes,width=740,height=450';
	
	for (var aa=0; aa<related_links.length; aa++) {
		related_links[aa].onclick = function() {
			popupWindow(this.href, this.target, window_params);
		}
	}
}

//	Popup window code
function popupWindow(url, target, features) {
	var page_position = (parseInt(navigator.appVersion) > 3) ? 'left=0,top=0,screenX=0,screenY=0,' : "";
	var popup_features = 'menubar=yes,status=yes,toolbar=yes,scrollbars=yes,resizable=yes,width=785,height=480';

	if (isUndefined(features)) {
		features = popup_features;
	}
	if (isUndefined(target)) {
		target = '_blank';
	}
	var the_window = window.open(url, target, page_position+features);
	the_window.focus();
	return the_window;
}

function linkPopup(src, features) {
	return popupWindow(src.getAttribute('href'),src.getAttribute('target') || '_blank',features);
}

//	Utility function [currently used in popupWindow()]
function isUndefined(v) { 
	//	Returns true if [v] is not defined, false otherwise
	//	IE 5.0 does not support the undefined keyword, so we cannot 
	//	do a direct comparison such as v===undefined.
	var undef;
	return v===undef;
}
//	End Popup window code







//	FLASH PLAYER CHECK
//	Checks for Flash 4,5,6,7 plug-in. This works with Netscape, Mozilla, IE Win and IE5 Mac.
//	Variable [hasRightVersion] will be set to true or false
var hasFlash2 = false;
var hasFlash3 = false;
var hasFlash4 = false;
var hasFlash5 = false;
var hasFlash6 = false;
var hasFlash7 = false;

var requiredVersion = 6;
var maxVersion = 7;
var actualVersion = 0;
var hasRightVersion = false;	


if (navigator.plugins) {
	if (navigator.plugins["Shockwave Flash 2.0"] || navigator.plugins["Shockwave Flash"]
	&& navigator.mimeTypes["application/x-shockwave-flash"] 
	&& navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin) {		
		var isVersion2 = navigator.plugins["Shockwave Flash 2.0"] ? " 2.0" : "";
		var flashDescription = navigator.plugins["Shockwave Flash" + isVersion2].description;
		var flashVersion = parseInt(flashDescription.charAt(flashDescription.indexOf(".") - 1));
		
		hasFlash4 = flashVersion == 4;
		hasFlash5 = flashVersion == 5;
		hasFlash6 = flashVersion == 6; 
		hasFlash7 = flashVersion >= 7; 
	}
}

//	Write VBScript on IE Windows
if (isIE && isWin){
	document.write('<SCR' + 'IPT LANGUAGE=VBScript\> \n');
  	document.write('on error resume next \n');
  	document.write('hasFlash4 = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.4"))) \n');
	document.write('hasFlash5 = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.5"))) \n');
	document.write('hasFlash6 = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.6"))) \n');
	document.write('hasFlash7 = (IsObject(CreateObject("ShockwaveFlash.ShockwaveFlash.7"))) \n');	
  	document.write('</SCR' + 'IPT\> \n');
}
for (var i=2; i <= maxVersion; i++) {  
	if (eval("hasFlash" + i) == true) {
		actualVersion = i;
	}
}
if (actualVersion >= requiredVersion) {
	hasRightVersion = true;
}//	End Flash Player check

//	var site_bg = '#fdfaf3';

//	This function returns the <object> and <embed> tags in variable [oeTags]
function makeFlashTags(the_swf,the_height,the_width) {
	if (hasRightVersion) {
		var flashTag;
		if (isIE && isWin) {
			flashTag = '<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"'
			+ 'width="'+the_width+'" height="'+the_height+'"'
			+ 'codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab">'
			+ '<param name="movie" value="'+the_swf+'" />'
			+ '<param name="play" value="true" />'
			+ '<param name="quality" value="high" />'
			+ '<param name="menu" value="false" />'
			//	+ '<param name="loop" value="false" />'
			//	+ '<param name="bgcolor" value="'+site_bg+'" />'
			+ '</object>';
		} else {
			flashTag = '<embed src="'+the_swf+'"'
			+ 'width="'+the_width+'" height="'+the_height+'"'
			+ 'play="true"'
			+ 'quality="high"'
			+ 'menu="false"'
			+ 'type="application/x-shockwave-flash"'
			+ 'pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash">'
			//	+ 'loop="false"'
			+ '</embed>';			
		}
		return flashTag;
	}
}
//	This function swaps innerHTML of [the_container] with makeOETags()
function insertFlash(the_swf,the_height,the_width,the_container) {
	if (hasRightVersion) {
		document.getElementById(the_container).style.height = the_height+'px';
		document.getElementById(the_container).style.visibility = 'hidden';
		document.getElementById(the_container).innerHTML = makeFlashTags(the_swf,the_height,the_width);
		document.getElementById(the_container).style.visibility = 'visible';
	}
}

//	Needed to create a "parameter-less" function to use setTimeout() in the init() function
function runActivity() {
	insertFlash(the_swf,the_height,the_width,the_container);
}


function addFeedbackListItem() {
	//Create Elements
	var the_li = document.createElement('LI');
	var the_a = document.createElement('A');
	var the_img = document.createElement('IMG');
	var the_text = document.createTextNode('What do you think of this activity?');
	
	var activity_name = document.getElementsByTagName('H2')[0].firstChild.nodeValue;
	
	//Set Element Attributres
	ml_strg = 'mai'
	+ 'lto'
	+ ':nps_webra'
	+ 'ngers'
	+ '@'
	+ 'np'
	+ 's.go'
	+ 'v';
	the_a.href = ml_strg+'?subject=Feedback About ' + activity_name;
	the_img.src = site_root + 'images/email_question.gif';
	the_img.className = 'picLeftNoMargin';
	
	//Append 'em
	the_li.appendChild(the_a);
	the_a.appendChild(the_img);
	the_a.appendChild(the_text);
	
	document.getElementById('moreInfoRight').appendChild(the_li);
}



var form1_1 = new Array('can','run','ship','sand','deck');
var form1_2 = new Array('ask','Line','wind','hold','leaf');
var form1_3 = new Array('salt','key','pot','fur','spark');


var form2_1 = new Array('honor','habitat','hunt','trust','preserve');
var form2_2 = new Array('Hoist','case','study','cover'); //,'view'
var form2_3 = new Array('survive','Path','place','change','travel');

var form3_1 = new Array('wonder','manage','leader','choice','rights');
var form3_2 = new Array('protect','word','books','layer'); //,'pride'
var form3_3 = new Array('volt','glare','school','story'); // 'walls'

var form1_0 = new Array('salmon','eagle','bear');
var form2_0 = new Array('fox','rabbit','moose');
var form3_0 = new Array('horse','buffalo','owl');



//Quickfill!! Click on the '.....'!!
function fillFields(level_number,tour_number) {
	var pw_form = document.getElementById('pwForm');
	var pw_inputs = pw_form.getElementsByTagName('INPUT');
	
	var check_these = eval('form'+level_number+'_'+tour_number);	
	
	for (var aa=0; aa<check_these.length; aa++) {
		pw_inputs[aa].value = check_these[aa];
	}
}

function passportForm(level_number,tour_number) {
	
	var pw_form = document.getElementById('pwForm');
	var pw_inputs = pw_form.getElementsByTagName('INPUT');
	
	var check_these = eval('form'+level_number+'_'+tour_number);
	var all_correct = 0;
	
	
	for (var aa=0; aa<check_these.length; aa++) {
		for (var bb=0; bb<pw_inputs.length; bb++) {
		//alert(pw_inputs[bb].value.toLowerCase()+' == '+check_these[aa]);
			if (pw_inputs[bb].value.toLowerCase() == check_these[aa].toLowerCase()) {
				all_correct++;
			}
		}				
	}
	
	if (all_correct == check_these.length) {
		return true;
	} else {
		var error_message = 'Sorry, one or more of your Secret Words is incorrect. Please review and try again.  \n\n'
		+ 'Common errors are: \n'		
		+ '- Misspelling \n'
		+ '- Missing Words \n'
		+ '- Duplicated Words \n'
		+ '- Entering Secret Words from other tours \n';

		alert(error_message);
		return false;
	}	
}







// The next two functions (attempt to) position the sponsors' logos at the lower left of the page
// They aren't being used right now
function getWindowHeight() {
	var windowHeight=0;
	
	if (typeof(window.innerHeight) == 'number') {
		windowHeight = window.innerHeight;
		
	} else if (document.documentElement && document.documentElement.clientHeight) {
		windowHeight = document.documentElement.clientHeight;
		
	} else if (document.body && document.body.clientHeight) {
		windowHeight=document.body.clientHeight;
	}
	return windowHeight;
}

function setFooter() {		
	//var windowHeight = getWindowHeight();
	alert(getWindowHeight());

	var footerElement = document.getElementById('sponsorsLogos');
	var footerHeight = footerElement.offsetHeight;
	
	footerElement.style.position = 'absolute';
	footerElement.style.top = (getWindowHeight() - footerHeight) + 'px';

}











//  Added by Vijay for older HTML Name the Park
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}