Instructions

top.name = "mainwin"; var isNav, isIE; if (parseInt(navigator.appVersion) >= 4) { if (navigator.appName == "Netscape") { isNav = true; } else { isIE = true; } } /* if (isNav) { top.window.captureEvents (Event.RESIZE); top.window.onresize = new Function ("top.location.reload();"); } */ // WRITE_SUPP // This function writes the title and text in the supplemental frame // The caller can also specify any number of links to include at the bottom of the supp frame, along // with javascript functions (defined in the caller's document) to associate with the functions. function Write_Supp (title, text) { parent.supp.document.open("text/html", "replace"); parent.supp.document.write ('Instructions'); iw.document.write ('

'); iw.document.write ('' + Title() + ': Instructions

'); iw.document.write (Instructions()); iw.document.write ('

Click here for general tips about using this website.'); iw.document.writeln ('

'); iw.document.close(); if (bringToFront) iw.focus(); } // Call this function if you want to update the instructions window, if it's open. If the window // isn't open, nothing happens. You can't update after banner.htm has been reloaded, because // the iw reference is lost at that point. function Update_Instructions () { if (typeof iw == "undefined" || iw.closed) return; else Instructions_Window (false); } function Close_Instructions () { if (typeof iw == "undefined" || iw.closed) return; else iw.close(); } window.onunload = Close_Instructions; // HISTORY STUFF var historyP = new Array(); // can't use "history" because it's already defined as a property of the window var histsize = 0; // size of historyP array (may not be same as historyP.length) var histind = -1; // current place in historyP array; will get bumped up to 0 the first time Add_To_History is called var ok_to_add_hist = true; // set to false when back or forward pressed so page won't get added again var isBack = false; // determines whether back button changes color on rollover var isForward = false; // determines whether forward button changes color on rollover function Add_To_History (h) { if (!ok_to_add_hist) { // if ok_to_add_hist is false, Add_To_History was called ok_to_add_hist = true; // just after the forward or back button was pressed, return; // so don't do anything } ++histind; // increment histind historyP[histind] = h; // store the function (h) in the historyP array histsize = histind + 1; // histsize always gets reset when a new page is added if (histind > 0) Enable_Back(); // enable the back button Disable_Forward (); // disable the forward button } function Go_Back () { if (isBack) { ok_to_add_hist = false; // set ok_to_add_hist to false (see Add_To_History) --histind; // decrement histind if (histind == 0) // if we're about to call the first function Disable_Back () // in the historyP array, disable the back button Enable_Forward (); // enable the forward button eval ("top.main." + historyP[histind]); // call the function in the historyP array } } function Go_Forward () { if (isForward) { ok_to_add_hist = false; // set ok_to_add_hist to false (see Add_To_History) ++histind; // increment histind if (histind == histsize - 1) // if we're about to call the last function Disable_Forward (); // in the historyP array, disable the forward button Enable_Back (); // enable the back button eval ("top.main." + historyP[histind]); // call the function in the history array } } function Enable_Back () { if (bannerLoaded) top.banner.document.getElementById('back').src = backEn.src; // top.banner.document.back.src = backEn.src; isBack = true; } function Disable_Back () { if (bannerLoaded) top.banner.document.getElementById('back').src = backDim.src; isBack = false; } function Enable_Forward () { if (bannerLoaded) top.banner.document.getElementById('forward').src = forwardEn.src; isForward = true; } function Disable_Forward () { if (bannerLoaded) top.banner.document.getElementById('forward').src = forwardDim.src; isForward = false; } function Reset_History () { histsize = 0; histind = -1; ok_to_add_hist = true; Disable_Back (); Disable_Forward (); } // Modified from quirksmode: find out if we're not using Safari or IE var detect = navigator.userAgent.toLowerCase(); function CheckBrowserString(string) { var place = detect.indexOf(string) + 1; return place; } var warningIssued = false; function IssueWarningIfNeeded() { // Only issue warning once if (warningIssued) { return; } // no problem with safari if (CheckBrowserString('safari')) { return; } // no problem with IE if (CheckBrowserString('msie')) { return; } // no problem with firefox 1.5 var place; if (place = CheckBrowserString('firefox')) { var v = detect.substr(place + 7, 3) * 1; if (v >= 1.5) { return; } } alert('A known bug in some browsers, including Firefox version 1.0, causes the back and forward page buttons, both in the Sensation and Perception window (the double-arrow buttons) and in the browser, to malfunction in some cases. The bug has been fixed in Firefox version 1.5, which is now available from getfirefox.com. Firefox users should navigate the site using the single-arrow buttons and the drop-down menu at the top of the window.'); warningIssued = true; } function Go_Back_Page() { IssueWarningIfNeeded(); top.history.back(); } function Go_Forward_Page() { IssueWarningIfNeeded(); top.history.forward(); } // BANNER AND PULL-DOWN MENU STUFF var bannerLoaded = false; var backEn = new Image(); backEn.src = "../common/butBack.gif"; var backDim = new Image(); backDim.src = "../common/butBackDim.gif"; var forwardEn = new Image(); forwardEn.src = "../common/butForward.gif"; var forwardDim = new Image(); forwardDim.src = "../common/butForwardDim.gif"; var studyNames = new Array ( // "Chapter Organization", "Chapter Summary", "Key Terms", "Study Questions" ); var studyURLs = new Array ( // "chaporganization", "chapsummary", // "namesdates", "terms", "questions" ); function MenuName(s) { if (s.length <= 25) { return s; } else { var newToTry = ""; var newS = ""; var words = s.split(" "); for (var i = 0; i < words.length; ++i) { if (newToTry != "") { newToTry += " "; } newToTry += words[i]; if (newToTry.length > 25) { break; } newS = newToTry; } return newS + "..."; } } // Note that the "menu.js" file for the given chapter must be included before this function is called. function Write_Banner () { top.banner.document.open("text/html", "replace"); top.banner.document.write (''); top.banner.document.write ('

'); top.banner.document.write(''); if (typeof chapNum != "undefined") { top.banner.document.write (''); } top.banner.document.write(''); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write(''); top.banner.document.write('

'); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write ('

'); top.banner.document.write('

'); top.banner.document.write (''); top.banner.document.close (); bannerLoaded = true; } var demoVersion; if (location.hostname.indexOf('sinauer') != -1) { demoVersion = true; } else { demoVersion = false; } demoVersion = false; function JumpToChapter(c) { if (c == null) { // then we're coming from the form above; otherwise c is passed var c = top.banner.document.exerciseForm.chapterSelect.selectedIndex; c = c - 2; } top.banner.document.exerciseForm.chapterSelect.options[0].selected = true; if (demoVersion == true && c > 10) { alert('The content for Chapter ' + c + ' is not yet available. Chapters 1-10 are available at this time. The remaining chapters will be available by January 15, 2006.'); } else if (c == 0) { top.location = "../home/startF.htm"; } else { top.location = "../chap" + c + "/startF.htm"; } } function Goto_Exercise () { var selected = top.banner.document.exerciseForm.exerciseSelect.selectedIndex; top.banner.document.exerciseForm.exerciseSelect.options[0].selected = true; if (selected == 2) { top.location = "../chap" + chapNum + "/startF.htm"; return; } selected = selected - 4; if (selected >= 0 && selected < exerURLs.length) { if (exerURLs[selected] == "") top.location = "../common/underconstF.htm"; else top.location = "../chap" + chapNum + "/" + exerURLs[selected] + "F.htm"; return; } selected = selected - exerURLs.length - 1; if (selected >= 0 && selected < surfURLs.length) { if (surfURLs[selected] == "") //top.location = "../common/underconstF.htm"; dsfad return; else top.location = "../chap" + chapNum + "/" + surfURLs[selected] + "F.htm"; return; } selected = selected - surfURLs.length - 1; if (selected >= 0 && selected < studyURLs.length) { if (!studyComplete) top.location = "../common/underconstF.htm"; else top.location = "../chap" + chapNum + "/" + studyURLs[selected] + "F.htm"; return; } selected = selected - studyURLs.length - 1; if (selected == 0) { top.location = "../home/startF.htm"; return; } return; } function Expand() { window.open (location.href.replace(/.htm/, "BigF.htm"), "Expanded Page", "top=5,left=5,scrollbars,resizable,menubar", true); } // UTILITY FUNCTIONS // Return random integer >= 0 and < uplim function Rand_Int (uplim) { return Math.floor (Math.random() * uplim); } // Note that in the following functions, you just specify the name of the div. // This is unlike in the eBook API, where we have to pass in the actual element. // Set display of layer l (d should be "block" or "none"; if "toggle" we toggle) function Layer_Display (l, d) { var els = document.getElementById(l); if (els == null) { //alert("Couldn't get div " + l); return null; } els = els.style; if (d == "toggle" || d == null) { if (els.display == "block") { d = "none"; } else { d = "block"; } } els.display = d; return d; } // Set visibility of layer l (v should be "hidden" or "visible") function Layer_Vis (l, v) { var els = document.getElementById(l); if (els == null) { //alert("Couldn't get div " + l); return null; } els = els.style; if (v == "toggle" || v == null) { if (els.visibility == "visible") { v = "hidden"; } else { v = "visible"; } } els.visibility = v; return v; } // Return the current position (style.left/top) of layer l function Layer_Position(l, dim) { if (dim == "x") return parseInt(document.getElementById(l).style.left); else return parseInt(document.getElementById(l).style.top); } // Move layer l to position x, y. If y is not specified, only move horizontally function Layer_Move_To (l, x, y) { document.getElementById(l).style.left = x + "px"; if (arguments.length > 2) document.getElementById(l).style.top = y + "px"; } // Move layer l by dx/dy pixels (can be negative or positive values). If y not specified, move horizontally only function Layer_Move (l, dx, dy) { var layer = document.getElementById(l); layer.style.left = (parseInt(layer.style.left) + dx) + "px"; if (arguments.length > 2) layer.style.top = (parseInt(layer.style.top) + dy) + "px"; } // Return the number value of something like "50px" function RemovePx(s) { var pxPos = s.indexOf("px"); if (pxPos != -1) { s = s.substring(0, pxPos); } return s * 1; } // Stop the event e from bubbling up to higher layers of the DOM // see http://www.quirksmode.org/index.html?/js/events_compinfo.html function Stop_Event(e) { e.cancelBubble = true; // IE if (e.stopPropagation) // everyone else e.stopPropagation(); // In NS, we (also?) have to return false to cancel the default action from occurring. // Stop_Event returns false so that the caller can say "return Stop_Event(e);" // to cover all eventualities. return false; } var soundPlayerFrame = top.main; var soundLoaded = new Object(); // Not used right now (see below) function PlaySound(layerId, soundSrc, loop) { /* In theory, we should be able to use the following code to only load the sound once, then just use the Stop() command in StopSound. But, it doesn't seem to work in Firefox -- the sound loads and plays, but won't stop. Also, doing it without keeping it in the document ensures that the sound starts over every time it's played. if (soundLoaded[soundSrc] == true) { soundPlayerFrame.document[layerId + "embed"].Play(); return; } soundLoaded[soundSrc] = true; */ if (loop == null || loop == "false" || loop == false) { loop = "false"; } else { loop = "true"; } soundPlayerFrame.document.getElementById(layerId).innerHTML = "

"; } function StopSound(layerId) { if (soundPlayerFrame.document[layerId + "embed"] != null) { //soundPlayerFrame.document[layerId + "embed"].Stop(); soundPlayerFrame.document.getElementById(layerId).innerHTML = ""; } } function PreloadSounds() { var f = top.soundFrame.document; f.open(); f.writeln(""); for (var i = 0; i < arguments.length; ++i) { // write code for each argument here, using f.writeln, perhaps: f.writeln("

"); } f.writeln(""); }