var ErlDocs = (function(index) {

    /* Search box height? */
    var RESULT_OFFSET_Y = 26;

    /* Human readable keyCode index */
    var KEY = {'BACKSPACE': 8, 'TAB': 9, 'NUM_PAD_CLEAR': 12, 'ENTER': 13, 'SHIFT': 16, 'CTRL': 17, 'ALT': 18, 'PAUSE': 19, 'CAPS_LOCK': 20, 'ESCAPE': 27, 'SPACEBAR': 32, 'PAGE_UP': 33, 'PAGE_DOWN': 34, 'END': 35, 'HOME': 36, 'ARROW_LEFT': 37, 'ARROW_UP': 38, 'ARROW_RIGHT': 39, 'ARROW_DOWN': 40, 'PRINT_SCREEN': 44, 'INSERT': 45, 'DELETE': 46, 'SEMICOLON': 59, 'WINDOWS_LEFT': 91, 'WINDOWS_RIGHT': 92, 'SELECT': 93, 'NUM_PAD_ASTERISK': 106, 'NUM_PAD_PLUS_SIGN': 107, 'NUM_PAD_HYPHEN-MINUS': 109, 'NUM_PAD_FULL_STOP': 110, 'NUM_PAD_SOLIDUS': 111, 'NUM_LOCK': 144, 'SCROLL_LOCK': 145, 'SEMICOLON': 186, 'EQUALS_SIGN': 187, 'COMMA': 188, 'HYPHEN-MINUS': 189, 'FULL_STOP': 190, 'SOLIDUS': 191, 'GRAVE_ACCENT': 192, 'LEFT_SQUARE_BRACKET': 219, 'REVERSE_SOLIDUS': 220, 'RIGHT_SQUARE_BRACKET': 221, 'APOSTROPHE': 222};

    (function () {
	    /* 0 - 9 */
	    for (var i = 48; i <= 57; i++) {
            KEY['' + (i - 48)] = i;
	    }
	    /* A - Z */
	    for (i = 65; i <= 90; i++) {
            KEY['' + String.fromCharCode(i)] = i;
	    }
	    /* NUM_PAD_0 - NUM_PAD_9 */
	    for (i = 96; i <= 105; i++) {
            KEY['NUM_PAD_' + (i - 96)] = i;
	    }
	    /* F1 - F12 */
	    for (i = 112; i <= 123; i++) {
            KEY['F' + (i - 112 + 1)] = i;
	    }
    })();

    var $search       = $("#search"),
        $results      = $("#results"),
        searchActive  = false,
        selected      = null,
        resultsCount  = 0,
        showingFuns   = true;


    var getDetails = function() {
        return showingFuns
            ? {"text":"Hide Functions", "cBottom": "25%", fTop: "75%"}
            : {"text":"View Functions", "cBottom": "0px", fTop: "100%"};
    };

    var setDetails = function(details, fun) {
        $("#viewfuns").text(details.text);
        $("#content").css({"bottom":details.cBottom});
        $("#funwrapper").animate({"top":details.fTop}, "normal", fun);
    };

    function scrollIntoView($parent, $child, force) {

        var childTop     = $child.position().top - RESULT_OFFSET_Y,
            scrollTop    = $parent[0].scrollTop,
            childHeight  = $child.height(),
            parentHeight = $parent.height(),
            newTop       = null;

	    if (force) {
	        $parent[0].scrollTop = scrollTop + childTop;
	        return;
	    }

        if (childTop < 0) {
            newTop = scrollTop + childTop;
        } else if (childTop + childHeight > parentHeight) {
            newTop = scrollTop + ((childTop + childHeight) - parentHeight);
        }

        if (newTop !== null) {
            if (Math.abs(newTop - scrollTop) > 200) {
                $parent.animate({"scrollTop": newTop}, 'fast');
            } else {
                $parent[0].scrollTop = newTop;
            }
        }
    };

    function setSelected(x, force) {

        var sel, children = $results.children("li");

        if (x >= 0 && x < resultsCount) {
	        if (selected !== null) {
	            children.eq(selected).removeClass("selected");
	        }
	        selected = x;
	        sel = children.eq(x).addClass("selected");
            if (sel.length > 0) {
                scrollIntoView($results, sel, force);
            }
        }
    };

    function keypress(e) {

        var tmp, blockedKeys = [0, KEY.TAB, KEY.CTRL, KEY.ALT,
				KEY.WINDOWS_LEFT, KEY.GRAVE_ACCENT];

	if (!($.inArray(e.keyCode, blockedKeys) === -1)) {
            return;
	}

        if        (e.keyCode === KEY.ARROW_DOWN) { setSelected(selected + 1);
        } else if (e.keyCode === KEY.ARROW_UP) { setSelected(selected - 1);
        } else if (e.keyCode === KEY.PAGE_DOWN) { setSelected(selected + 7);
        } else if (e.keyCode === KEY.PAGE_UP) { setSelected(selected - 7);
        } else if (e.keyCode === KEY.ENTER) {
            tmp = $results.children(".selected");
            if (tmp.length > 0) {
                document.location.href = tmp.find("a").attr("href");
            }
        } else {
	        filter($search.val());
        }
    };

    function windowResize() {
        $results.height($(window).height() - RESULT_OFFSET_Y);
    };

    function showModules() {

        var i, item, len  = index.length,
            results = [];

        for (i = 0; i < len; i += 1) {
            item = index[i];
            if (item[0] === "mod" || item[0] === "app") {
                results.push(item);
            }
        }
        return results;
    };

    function searchApps(str) {

        var i, count, item,
            len     = index.length,
            results = [],
            terms   = str.split(" ");

        for (i = 0, count = 0; i < len; i += 1) {
            item = index[i];
            if (match(item[2], terms)) {
                results.push(item);
                if (count++ > 100) {
                    break;
                }
            }
        }
        return results;
    };

    function formatResults(results, str) {

        var i, item, hash, url, path, html = "",
            len       = results.length,
            searchStr = isSearchStr(str) ? "&search="+str : "";

        for (i = 0; i < len; i += 1) {

            item = results[i];

	    if (item[0] === "app") {
		    hash = "#" + item[1];
		    path = "index";
	    } else {
		    hash = (item[0] === "fun") ? "#" + item[2].split(":")[1] : "";
		    path = item[1] + "/" + item[2].split(":")[0];
	    }
	    url = CURRENT_ROOT + path + ".html?i=" + i + searchStr + hash;

	    html += '<li class="' + item[0] + '"><a href="' + url + '">'
	        + '<span class="name">' + item[2] + "</span>"
	        + '<br /><span class="sub">' + item[3] + '</span>'
	        + '</a></li>';
        }

        return html;
    };

    function isSearchStr(str) {
        return typeof str !== "undefined" && str !== "";
    }

    function filter(str) {

        var results = isSearchStr(str) ? searchApps(str) : showModules(),
            html    = formatResults(results, str);

        $results[0].innerHTML = html;
        setSelected(0);
        resultsCount = results.length;
    };

    function match(str, terms) {
        for (var i = 0, len = terms.length; i < len; i += 1) {
	        if (str.match(new RegExp(terms[i], "i")) === null) {
	            return false;
	        }
        }
        return true;
    };

    function parseQuery(url) {

        var arr, query, i, len, tmp,
            qs = url.split("?")[1];

        if (typeof qs !== "undefined") {
	        arr   = qs.split("&");
            query = {};
	        for (i = 0, len = arr.length; i < len; i += 1) {
	            tmp = arr[i].split("=");
	            query[tmp[0]] = tmp[1];
	        }
	        return query;
        }
        return false;
    };

    function strToBool(val) {
        return val === "true";
    };

    function updateTitle() {
	var app, idx, mod, $t, i, j, results, len;
	results = showModules();
	len = results.length;
	$t = $("body h1"),
	mod = $t.text();
	for (i = 0; i < len; i++) {
	    idx = results[i];
	    if (idx[0] !== "mod" || idx[2] !== mod) continue;
	    app = idx[1];
	    for (j = i - 1; j >= 0; j--) {
		idx = results[j];
		if (idx[0] !== "app" || idx[1] !== app) continue;
		    $t.after(' (<a href="../index.html?i=' + j + '#' + app + '">' + app + '</a>)');
		return;
	    }
	}
    }

    function init() {

        var val, qs = parseQuery(document.location.search);

        if (qs && qs.search) {
            val = decodeURIComponent(qs.search.replace(/\+/g,  " "));
            $search.val(val);
            filter(val);
        } else {
            $search.val($search.attr("placeholder"));
            filter();
        }

        if (qs && qs.i) {
            setSelected(parseInt(qs.i, 10), true);
        } else {
            setSelected(0);
        }

        if (qs && (qs.i || qs.search)) {
            $search[0].focus();
        } else {
            document.body.focus();
        }
    };

    $search.keydown(function (e) {

        // Run First keydown
        setTimeout(function () { keypress(e); }, 0);

        // // Set up a timer to repeat (holding down arrow keys etc)
        var timer = null, timeout = null,
            repeatKeys   = [KEY.PAGE_UP, KEY.PAGE_DOWN,
			    KEY.ARROW_UP, KEY.ARROW_DOWN,
			    KEY.BACKSPACE],
            set_interval = function () {
                timer = setInterval(function () { keypress(e); }, 60);
            };

        if ($.inArray(e.keyCode, repeatKeys) === -1) {
            return;
	    }

        function cleanup() {
            window.clearTimeout(timeout);
            $(document).unbind("keyup", cleanup);
            clearInterval(timer);
        }

        $search.bind("keyup", cleanup);
        timeout = window.setTimeout(set_interval, 300);
    });

    $search.focus(function () {
        $search[0].focus();
        $("#sidebar").removeClass("inactive");
        searchActive = true;
        if ($search.val() === $search.attr("placeholder")) {
            $search.val("");
        }
    });

    $search.blur(function () {
        $("#sidebar").addClass("inactive");
        searchActive = false;
        document.body.focus();
        if ($search.val() ==="" ) {
            $search.val($search.attr("placeholder"));
        }
    });

    $(document).bind("keypress", function(e) {

        if (e.keyCode === KEY.TAB) {

            e.preventDefault();
            e.stopPropagation();

            if(searchActive) {
                $search.blur();
                $("#content")[0].focus();
            } else {
                $search[0].focus();
            }

            return false;
        }
        return true;
    });

    showingFuns = !!window.localStorage &&
        strToBool(window.localStorage.footer);

    if (document.title.match("Module Index") === null) {
	updateTitle();
	setDetails(getDetails(), function() {
		$("#funwrapper").css({"display":"block"});
	    });
    }

    $("#viewfuns").bind("mousedown", function(e) {

        showingFuns = !showingFuns;
        setDetails(getDetails(), null);

        if (!!window.localStorage) {
            window.localStorage.footer = showingFuns;
        }
    });

    $(window).bind('resize', windowResize);
    windowResize();

    init();

})(index);

/* Copyright (C) 2007, 2008 gnombat@users.sourceforge.net */
/* License: http://shjs.sourceforge.net/doc/gplv3.html */

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