var redirect = {
	home : 'index'
};

function gotoPage() {
	var page = document.getElementById('txtgoto').value.toLowerCase();
	page = (page.split("-"))[0];
	page = page.replace(/[^0-9a-z]/gi, '');
	
	if (redirect[page])
		page = redirect[page];
	else {
		var searchStr = '\\|([^|]*-)?';
		var n_re = /[0-9]+/gi;
		var last = 0;
		while (true) {
			var n_found = n_re.exec(page);
			if (!n_found)
				break;
			searchStr += page.substring(last, n_found.index);
			if (n_found.length < 3)
				searchStr += '0*';
			searchStr += n_found;
			last = n_found.index + n_found[0].length;
		}
			
		searchStr += page.substring(last) + '(-[^|]*)?\\|';
		var re = new RegExp(searchStr, "i");
		
		var search = re.exec(availablePages);
		
		if (!search) {
			alert('Page \''+page+'\' not found.');
			return;
		}
	
		var found = search[0];
		page = found.substring(1, found.length-1);
		page = keepOnlyFirstAndLast(page);
	}
	
	page += '.html';
	
	location.href = page.toLowerCase();
}

function keepOnlyFirstAndLast(page) {
	var index = page.indexOf("-");
	if(index < 0) return page;
	
	var index2 = page.lastIndexOf("-");
	if(index2 < 0 || index2 == index) return page;
	
	page = page.substring(0,index) + page.substring(index2);
	return page;
} 
//nav tool next/back arrow
var pageList = ['i','ii','unit1toc','016c-016d','016e-016f','016g-016h','016-017','017a','018a','018b-018c','018d-018e','018f-018g','018h-018i','018j-018k','018l-018m','018-019','020a-020b','020-021','022-023','024-025','026-027','028-029','030-031','032-033','034-035','036-037','038-039','039a-039b','039c-039d','039e-039f','039g-039h','039i-039j','039k-039l','040a','040b-040c','040d-040e','040f-040g','040h-040i','040j-040k','040l-040m','040-041','042a-042b','042-043','044-045','046-047','048-049','050-051','052-053','054-055','056-057','058-059','060-061','062-063','064-065','065a-065b','065c-065d','065e-065f','065g-065h','065i-065j','065k-065l','066a','066b-066c','066d-066e','066f-066g','066h-066i','066j-066k','066l-066m','066-067','068a-068b','068-069','070-071','072-073','074-075','076-077','078-079','080-081','082-083','084-085','086-087','087a-087b','087c-087d','087e-087f','087g-087h','087i-087j','087k-087l','088a','088b-088c','088d-088e','088f-088g','088h-088i','088j-088k','088l-088m','088-089','090a-090b','090-091','092-093','094-095','096-097','098-099','100-101','102-103','104-105','106-107','108-109','110-111','111a-111b','111c-111d','111e-111f','111g-111h','111i-111j','111k-111l','112a','112b-112c','112d-112e','112f-112g','112h-112i','112j-112k','112l-112m','112-113','114a-114b','114-115','116-117','118-119','120-121','122-123','124-125','126-127','128-129','130-131','132-133','133a-133b','133c-133d','133e-133f','133g-133h','133i-133j','133k-133l','134-135','136-137','138-139','139a-139b','139c-139d','139e-139f','139g-139h','139i-139l','139s-139t','139u','lr1-lr3','lr4-lr6','lr7-lr9','lr10-lr12','lr13-lr15','lr16-lr18','lr19-lr21','lr22-lr24','lr25-lr27','lr28-lr30','lr31-lr33','lr34-lr36','lr37-lr39','lr40-lr42','lr43-lr45','lr46','lr47','lr48','tr2-tr3','tr4-tr5','tr6-tr7','tr8-tr9','tr10-tr11','tr12','tr13','tr14','tr15','tr16','tr17-tr20','tr21','tr22','tr23','tr24','tr25','tr26','tr27','tr28','tr29','tr30','tr31','tr32','tr33','tr34-tr37','tr38-tr41','tr42','tr43','tr44','tr45','tr46','tr47','tr48','tr49','tr50','tr51','tr52','tr53','tr54','tr55','tr56','tr57','tr58','tr59','tr60','tr61','tr62','tr63','tr64'];
//Go To functionality
var availablePages = '|i|ii|xxii|016c-016d|016e-016f|016g-016h|016-017|017a|018a|018b-018c|018d-018e|018f-018g|018h-018i|018j-018k|018l-018m|018-019|020a-020b|020-021|022-023|024-025|026-027|028-029|030-031|032-033|034-035|036-037|038-039|039a-039b|039c-039d|039e-039f|039g-039h|039i-039j|039k-039l|040a|040b-040c|040d-040e|040f-040g|040h-040i|040j-040k|040l-040m|040-041|042a-042b|042-043|044-045|046-047|048-049|050-051|052-053|054-055|056-057|058-059|060-061|062-063|064-065|065a-065b|065c-065d|065e-065f|065g-065h|065i-065j|065k-065l|066a|066b-066c|066d-066e|066f-066g|066h-066i|066j-066k|066l-066m|066-067|068a-068b|068-069|070-071|072-073|074-075|076-077|078-079|080-081|082-083|084-085|086-087|087a-087b|087c-087d|087e-087f|087g-087h|087i-087j|087k-087l|088a|088b-088c|088d-088e|088f-088g|088h-088i|088j-088k|088l-088m|088-089|090a-090b|090-091|092-093|094-095|096-097|098-099|100-101|102-103|104-105|106-107|108-109|110-111|111a-111b|111c-111d|111e-111f|111g-111h|111i-111j|111k-111l|112a|112b-112c|112d-112e|112f-112g|112h-112i|112j-112k|112l-112m|112-113|114a-114b|114-115|116-117|118-119|120-121|122-123|124-125|126-127|128-129|130-131|132-133|133a-133b|133c-133d|133e-133f|133g-133h|133i-133j|133k-133l|134-135|136-137|138-139|139a-139b|139c-139d|139e-139f|139g-139h|139i-139j-139k-139l|139s-139t|139u|LR1-LR2-LR3|LR4-LR5-LR6|LR7-LR8-LR9|LR10-LR11-LR12|LR13-LR14-LR15|LR16-LR17-LR18|LR19-LR20-LR21|LR22-LR23-LR24|LR25-LR26-LR27|LR28-LR29-LR30|LR31-LR32-LR33|LR34-LR35-LR36|LR37-LR38-LR39|LR40-LR41-LR42|LR43-LR44-LR45|LR46|LR47|LR48|TR2-TR3|TR4-TR5|TR6-TR7|TR8-TR9|TR10-TR11|TR12|TR13|TR14|TR15|TR16|TR17-TR18-TR19-TR20|TR21|TR22|TR23|TR24|TR25|TR26|TR27|TR28|TR29|TR30|TR31|TR32|TR33|TR34-TR35-TR36-TR37|TR38-TR39-TR40-TR41|TR42|TR43|TR44|TR45|TR46|TR47|TR48|TR49|TR50|TR51|TR52|TR53|TR54|TR55|TR56|TR57|TR58|TR59|TR60|TR61|TR62|TR63|TR64|';