function initPage() {
    initAutoScalingNav({
        menuId: "nav",
        sideClasses: true,
        minPaddings: 10
    });
    clearFormFields({
        clearInputs: true,
        clearTextareas: true,
        passwordFieldText: false,
        addClassFocus: "focus",
        filterClass: "default"
    });
}
function initAutoScalingNav(o) {
    if (!o.menuId) o.menuId = "nav";
    if (!o.tag) o.tag = "a";
    if (!o.spacing) o.spacing = 0;
    if (!o.constant) o.constant = 0;
    if (!o.minPaddings) o.minPaddings = 0;
    if (!o.liHovering) o.liHovering = false;
    if (!o.sideClasses) o.sideClasses = false;
    if (!o.equalLinks) o.equalLinks = false;
    if (!o.flexible) o.flexible = false;
    var nav = document.getElementById(o.menuId);
    if(nav) {
        nav.className += " scaling-active";
        var lis = nav.getElementsByTagName("li");
        var asFl = [];
        var lisFl = [];
        var width = 0;
        for (var i=0, j=0; i<lis.length; i++) {
            if(lis[i].parentNode == nav) {
                var t = lis[i].getElementsByTagName(o.tag).item(0);
                asFl.push(t);
                asFl[j++].width = t.offsetWidth;
                lisFl.push(lis[i]);
                if(width < t.offsetWidth) width = t.offsetWidth;
            }
            if(o.liHovering) {
                lis[i].onmouseover = function() {
                    this.className += " hover";
                }
                lis[i].onmouseout = function() {
                    this.className = this.className.replace("hover", "");
                }
            }
        }
        var menuWidth = nav.clientWidth - asFl.length*o.spacing - o.constant;
        if(o.equalLinks && width * asFl.length < menuWidth) {
            for (var i=0; i<asFl.length; i++) {
                asFl[i].width = width;
            }
        }
        width = getItemsWidth(asFl);
        if(width < menuWidth) {
            var version = navigator.userAgent.toLowerCase();
            for (var i=0; getItemsWidth(asFl) < menuWidth; i++) {
                asFl[i].width++;
                if(!o.flexible) {
                    asFl[i].style.width = asFl[i].width + "px";
                }
                if(i >= asFl.length-1) i=-1;
            }
            if(o.flexible) {
                for (var i=0; i<asFl.length; i++) {
                    width = (asFl[i].width - o.spacing - o.constant/asFl.length)/menuWidth*100;
                    if(i != asFl.length-1) {
                        lisFl[i].style.width = width + "%";
                    }
                    else {
                        if(navigator.appName.indexOf("Microsoft Internet Explorer") == -1 || version.indexOf("msie 8") != -1 || version.indexOf("msie 9") != -1)
                            lisFl[i].style.width = width + "%";
                    }
                }
            }
        }
        else if(o.minPaddings > 0) {
            for (var i=0; i<asFl.length; i++) {
                asFl[i].style.paddingLeft = o.minPaddings + "px";
                asFl[i].style.paddingRight = o.minPaddings + "px";
            }
        }
        if(o.sideClasses) {
            lisFl[0].className += " first-child";
            lisFl[0].getElementsByTagName(o.tag).item(0).className += " first-child-a";
            lisFl[lisFl.length-1].className += " last-child";
            lisFl[lisFl.length-1].getElementsByTagName(o.tag).item(0).className += " last-child-a";
        }
        nav.className += " scaling-ready";
    }
    function getItemsWidth(a) {
        var w = 0;
        for(var q=0; q<a.length; q++) {
            w += a[q].width;
        }
        return w;
    }
}

function clearFormFields(o)
{
    if (o.clearInputs == null) o.clearInputs = true;
    if (o.clearTextareas == null) o.clearTextareas = true;
    if (o.passwordFieldText == null) o.passwordFieldText = false;
    if (o.addClassFocus == null) o.addClassFocus = false;
    if (!o.filterClass) o.filterClass = "default";
    if(o.clearInputs) {
        var inputs = document.getElementsByTagName("input");
        for (var i = 0; i < inputs.length; i++ ) {
            if((inputs[i].type == "text" || inputs[i].type == "password") && inputs[i].className.indexOf(o.filterClass) == -1) {
                inputs[i].valueHtml = inputs[i].value;
                inputs[i].onfocus = function ()    {
                    if(this.valueHtml == this.value) this.value = "";
                    if(this.fake) {
                        inputsSwap(this, this.previousSibling);
                        this.previousSibling.focus();
                    }
                    if(o.addClassFocus && !this.fake) {
                        this.className += " " + o.addClassFocus;
                        this.parentNode.className += " parent-" + o.addClassFocus;
                    }
                }
                inputs[i].onblur = function () {
                    if(this.value == "") {
                        this.value = this.valueHtml;
                        if(o.passwordFieldText && this.type == "password") inputsSwap(this, this.nextSibling);
                    }
                    if(o.addClassFocus) {
                        this.className = this.className.replace(o.addClassFocus, "");
                        this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
                    }
                }
                if(o.passwordFieldText && inputs[i].type == "password") {
                    var fakeInput = document.createElement("input");
                    fakeInput.type = "text";
                    fakeInput.value = inputs[i].value;
                    fakeInput.className = inputs[i].className;
                    fakeInput.fake = true;
                    inputs[i].parentNode.insertBefore(fakeInput, inputs[i].nextSibling);
                    inputsSwap(inputs[i], null);
                }
            }
        }
    }
    if(o.clearTextareas) {
        var textareas = document.getElementsByTagName("textarea");
        for(var i=0; i<textareas.length; i++) {
            if(textareas[i].className.indexOf(o.filterClass) == -1) {
                textareas[i].valueHtml = textareas[i].value;
                textareas[i].onfocus = function() {
                    if(this.value == this.valueHtml) this.value = "";
                    if(o.addClassFocus) {
                        this.className += " " + o.addClassFocus;
                        this.parentNode.className += " parent-" + o.addClassFocus;
                    }
                }
                textareas[i].onblur = function() {
                    if(this.value == "") this.value = this.valueHtml;
                    if(o.addClassFocus) {
                        this.className = this.className.replace(o.addClassFocus, "");
                        this.parentNode.className = this.parentNode.className.replace("parent-"+o.addClassFocus, "");
                    }
                }
            }
        }
    }
    function inputsSwap(el, el2) {
        if(el) el.style.display = "none";
        if(el2) el2.style.display = "inline";
    }
}

if (window.addEventListener)
    window.addEventListener("load", initPage, false);
else if (window.attachEvent)
    window.attachEvent("onload", initPage);