var imageDir = '../images';
function createElementWithAttributes (gid,attlist) {
	var element = document.createElement(gid);
	for (att in attlist) {
		element.setAttribute(att,attlist[att])
	}
	return element
}


function showPageranges() {
	var pageranges = document.getElementById("PAGERANGES");
	if (pageranges) pageranges.innerHTML = window.frames['reader'].pageranges;
}

function setCheckbox(id,image) {
	
}

function setCheckbox2(image) {
}

function setCheckbox3(image) {
}

function setCheckbox4(image) {
}

function setCheckbox5(image) {
}

function resetInput() {
	var from = document.getElementById("FROM");
	if (from) from.value = "";
	var to = document.getElementById("TO");
	if (to) to.value = "";
}

function insert(location,number) {
	var loc = (location == "FROM") ? "von" : "bis";
	return "<span onclick=\"insertNumber('" + location +"','"+number+"')\" style='cursor:pointer;'>" + loc + "</span>";
	
}

function insertNumber(location,number) {
	document.getElementById(location).value = number;
}

function setPage() {

	var number = window.frames['data'].number;
	var sentences; 
	document.getElementById("PAGENUMBER").innerHTML = number;
	
	if (window.frames['data'].next) document.getElementById("NEXTPAGE").style.display = "block"
	if (!(window.frames['data'].next)) document.getElementById("NEXTPAGE").style.display = "none"
	
	if (window.frames['data'].previous) document.getElementById("PREVIOUSPAGE").style.display = "block"
	if (!(window.frames['data'].previous)) document.getElementById("PREVIOUSPAGE").style.display = "none"
	
	var pagecontents = document.getElementById("PAGECONTENTS");
	pagecontents.innerHTML = window.frames['data'].contents;
	
	
}

function setSelection() {
	var selection = document.getElementById("SELECTION");
	if (selection) selection.innerHTML = window.frames['reader'].selection;
}

function setChapter() {

	var sentences; 
	
	document.getElementById("CHAPTERTITLE").innerHTML = window.frames['data'].title ;
	document.getElementById("PAGEINCHAPTER").innerHTML = window.frames['data'].number;

	if (window.frames['data'].next) document.getElementById("NEXTCHAPTER").style.display = "block"
	if (!(window.frames['data'].next)) document.getElementById("NEXTCHAPTER").style.display = "none"
	
	if (window.frames['data'].previous) document.getElementById("PREVIOUSCHAPTER").style.display = "block"
	if (!(window.frames['data'].previous)) document.getElementById("PREVIOUSCHAPTER").style.display = "none"

	if (window.frames['data'].nextPage) document.getElementById("NEXTPAGEINCHAPTER").style.display = "block"
	if (!(window.frames['data'].nextPage)) document.getElementById("NEXTPAGEINCHAPTER").style.display = "none"
	
	if (window.frames['data'].previousPage) document.getElementById("PREVIOUSPAGEINCHAPTER").style.display = "block"
	if (!(window.frames['data'].previousPage)) document.getElementById("PREVIOUSPAGEINCHAPTER").style.display = "none"

	var chaptercontents = document.getElementById("CHAPTERCONTENTS");
	chaptercontents.innerHTML = window.frames['data'].contents;
	
	
}