//To add a section
//  Fill in hidden fields on page
//  Add name to chapter
//  Add URL to chapter urls
// include link from contents page
// indicate available modes


var chapterNames = new Array("Home", "1. Language", "2. Attention and Perception", "3. Thinking", "4. Autism")

//section names
var h = new Array("Title", "Contents")
var ch1 = new Array("Introduction", "Speech Perception", "Word Comprehension", "Sentence Comprehension (I)", "Sentence Comprehension (II)", "Word Production (I)", "Word Production (II)", "Sentence Production", "References", "Multimedia")
var ch2 = new Array("Visual System","Shape Constancy", "Attention", "Attention Deficit Disorder", "References", "Multimedia")
var ch3 = new Array("Thinking", "References")
var ch4 = new Array("Introduction", "Theory of Autism", "References")
var sectionNames = new Array(h,ch1,ch2,ch3,ch4)

//URL's for each section
var homeUrl = new Array("title","contents","instructions")
var ch1Urls = new Array("langIntro/MLintro","sPerception/sPerception", "wordComp/wordComprehension", "sentComp/comprehension1", "sentComp/comprehension2", "wordProd1/wordProduction", "wordProd2/PDP", "sentProd/sentProduction", "references/references", "sum_lang")
var ch2Urls = new Array("visual_system/v_system","shapeConstancy/shapeConstancy", "attention/attention", "ADHD/adhd", "references/references", "sum_attn")
var ch3Urls = new Array("section1/thinking", "references/references")
var ch4Urls = new Array("autismIntro", "autismTheory", "references/references")
var sectionUrls = new Array(homeUrl,ch1Urls,ch2Urls,ch3Urls,ch4Urls)

//directory of each chapter
var dir = new Array("home", "language", "attention", "thinking", "autism")

var chapterIndex=0
var sectionIndex=0

function changeChapter(chapterID){
    v = getSectionUrl(chapterID,0)
    parent.mainFrame.location = v  
    chapterIndex = document.forms[0].chapter.selectedIndex
    upDateSections(chapterIndex,sectionNames[chapterIndex][0])
    document.forms[0].section.selectedIndex = 0
}

function changeSection() {
   	sectionIndex = document.forms[0].section.selectedIndex
   	chapterIndex = document.forms[0].chapter.selectedIndex
   	parent.mainFrame.location = getSectionUrl(chapterIndex,sectionIndex)	
}


function getSectionUrl(theChapter, theSection) {
//   x = "langChapter" + (theChapter) + "/" + sectionUrls[theChapter][theSection] + ".html"
	x = dir[theChapter] + "/" + sectionUrls[theChapter][theSection] + ".html"
    return x
}

function goNext() {
	if (document.forms[0].section.length == document.forms[0].section.selectedIndex +1) {	
		if (document.forms[0].chapter.length != document.forms[0].chapter.selectedIndex +1){
			document.forms[0].chapter.selectedIndex++
		    changeChapter(document.forms[0].chapter.selectedIndex)
		}
   	}
   	else {
      	document.forms[0].section.selectedIndex++
		changeSection()
	}
}

function goPrev() {
	if (document.forms[0].section.selectedIndex != 0) {
		document.forms[0].section.selectedIndex--
		changeSection()
   	}
	else if (document.forms[0].chapter.selectedIndex != 0) {
		document.forms[0].chapter.selectedIndex--
		var L = sectionNames[document.forms[0].chapter.selectedIndex].length
		v = getSectionUrl(document.forms[0].chapter.selectedIndex,L-1)
		parent.mainFrame.location = v
		chapterIndex = document.forms[0].chapter.selectedIndex
		upDateSections(chapterIndex,sectionNames[chapterIndex][L-1])
        document.forms[0].section.selectedIndex = L-1
	}
}

function upDateSections(chapterIndex,theSection) {
	var sectionIndex=0
    document.forms[0].chapter.selectedIndex=chapterIndex	
	var sl = document.forms[0].section.options.length;
   	var theseSections = sectionNames[chapterIndex]

   	for (i=0; i<theseSections.length; i++)	
		if (i+1 > sl)
			document.forms[0].section.options[i] =	new Option(i+1 + ". " + theseSections[i], "i")
		else 
			document.forms[0].section.options[i].text = i+1 + ". " +theseSections[i]
		
   	if (sl > theseSections.length) 
		for (i = sl-1; i>= theseSections.length;i--)
			document.forms[0].section.options[i] = null
}

function loaded () {
   	if (parent.ready) {
//   	  	alert("chapter="+document.forms[0].chapter.value+", section="+document.forms[0].section.value)
      	setNav(document.forms[0].chapter.value, document.forms[0].section.value)
	}
	if(parent.name != "MMTBN") this.location= "http://psych.rice.edu/mmtbn/"
}


function setNav(chapter,theSection) {
  	if(parent.ready) {
       var chapterIndex = 0;
       var sectionIndex = 0;

  	   for (i=0; i<parent.frames[0].chapterNames.length; i++)
		    if(chapter == parent.frames[0].chapterNames[i]) {
		       	chapterIndex = i;
		        break;
	        }

 		parent.frames[0].upDateSections(chapterIndex,theSection)
	
 		for (i=0;i<parent.frames[0].chapterNames[chapterIndex].length;i++)		
    		if(theSection == parent.frames[0].sectionNames[chapterIndex][i]) {
		        sectionIndex = i;
       			break;
		    }
 		
		parent.frames[0].window.document.forms[0].chapter.selectedIndex=chapterIndex
		parent.frames[0].window.document.forms[0].section.selectedIndex=sectionIndex
   }
   else {		
	    window.location = "../home/" + parent.frames[0].homeUrl[0]+".html"
   }
}


function newWindow3(url, w, h, top, left) {
	var x = "window.open(url,\"\",\"toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,resizable=yes,copyhistory=no,width=" + w + ",height=" + h +",top=" + top + ",left=" + left +  "\")"
	eval(x)
}


function showMovie(movieTitle) {
	var movieURL

	if(parent.conn == 1)
		movieURL = movieTitle + "_h.html"
	else if(parent.conn == 2)
		movieURL = movieTitle + "_l.html"
	else //parent.conn == 3
		movieURL = movieTitle + "_s.html"

//	alert(movieURL)

	newWindow3(movieURL, 600, 420, 50, 50)
}

function playSound(sound) {	//sound implemented as html with embedded .mov 
	newWindow3(sound, 500, 400, 100, 100)
}