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','unit5toc','514c-514d','514e-514f','514g-514h','514-515','515a','516a','516b-516c','516d-516e','516f-516g','516h-516i','516j-516k','516l-516m','516-517','518a-518b','518-519','520-521','522-523','524-525','526-527','528-529','530-531','532-533','534-535','536-537','537a-537b','537c-537d','537e-537f','537g-537h','537i-537j','537k-537l','538a','538b-538c','538d-538e','538f-538g','538h-538i','538j-538k','538l-538m','538-539','540a-540b','540-541','542-543','544-545','546-547','548-549','550-551','552-553','554-555','556-557','558-559','559a-559b','559c-559d','559e-559f','559g-559h','559i-559j','559k-559l','560a','560b-560c','560d-560e','560f-560g','560h-560i','560j-560k','560l-560m','560-561','562a-562b','562-563','564-565','566-567','568-569','570-571','572-573','574-575','576-577','578-579','580-581','581a-581b','581c-581d','581e-581f','581g-581h','581i-581j','581k-581l','582a','582b-582c','582d-582e','582f-582g','582h-582i','582j-582k','582l-582m','582-583','584a-584b','584-585','586-587','588-589','590-591','592-593','594-595','596-597','598-599','600-601','602-603','604-605','606-607','607a-607b','607c-607d','607e-607f','607g-607h','607i-607j','607k-607l','608a','608b-608c','608d-608e','608f-608g','608h-608i','608j-608k','608l-608m','608-609','610a-610b','610-611','612-613','614-615','616-617','618-619','620-621','622-623','624-625','626-627','628-629','629a-629b','629c-629d','629e-629f','629g-629h','629i-629j','629k-629l','630-631','632-633','634-635','635a-635b','635c-635d','635e-635f','635g-635h','635i-635l','635s-635t','635u','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','tr1','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|514c-514d|514e-514f|514g-514h|514-515|515a|516a|516b-516c|516d-516e|516f-516g|516h-516i|516j-516k|516l-516m|516-517|518a-518b|518-519|520-521|522-523|524-525|526-527|528-529|530-531|532-533|534-535|536-537|537a-537b|537c-537d|537e-537f|537g-537h|537i-537j|537k-537l|538a|538b-538c|538d-538e|538f-538g|538h-538i|538j-538k|538l-538m|538-539|540a-540b|540-541|542-543|544-545|546-547|548-549|550-551|552-553|554-555|556-557|558-559|559a-559b|559c-559d|559e-559f|559g-559h|559i-559j|559k-559l|560a|560b-560c|560d-560e|560f-560g|560h-560i|560j-560k|560l-560m|560-561|562a-562b|562-563|564-565|566-567|568-569|570-571|572-573|574-575|576-577|578-579|580-581|581a-581b|581c-581d|581e-581f|581g-581h|581i-581j|581k-581l|582a|582b-582c|582d-582e|582f-582g|582h-582i|582j-582k|582l-582m|582-583|584a-584b|584-585|586-587|588-589|590-591|592-593|594-595|596-597|598-599|600-601|602-603|604-605|606-607|607a-607b|607c-607d|607e-607f|607g-607h|607i-607j|607k-607l|608a|608b-608c|608d-608e|608f-608g|608h-608i|608j-608k|608l-608m|608-609|610a-610b|610-611|612-613|614-615|616-617|618-619|620-621|622-623|624-625|626-627|628-629|629a-629b|629c-629d|629e-629f|629g-629h|629i-629j|629k-629l|630-631|632-633|634-635|635a-635b|635c-635d|635e-635f|635g-635h|635i-635j-635k-635l|635s-635t|635u|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|TR1|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|';