/* (c) 2007 - now() Ondrej Zara, 1.7 */
var OZ = {
    $:function(x) { return typeof(x) == "string" ? document.getElementById(x) : x; },
    select: function(x) { return document.querySelectorAll(x); },
    opera:!!window.opera,
    ie:!!document.attachEvent && !window.opera,
    gecko:!!document.getAnonymousElementByAttribute,
    webkit:!!navigator.userAgent.match(/webkit/i),
    khtml:!!navigator.userAgent.match(/khtml/i) || !!navigator.userAgent.match(/konqueror/i),
    Event:{
        _id:0,
        _byName:{},
        _byID:{},
        add:function(elm,event,cb) {
            var id = OZ.Event._id++;
            var element = OZ.$(elm);
            var fnc = (element && element.attachEvent ? function() { return cb.apply(element,arguments); } : cb);
            var rec = [element,event,fnc];
            var parts = event.split(" ");
            while (parts.length) {
                var e = parts.pop();
                if (element) {
                    if (element.addEventListener) {
                        element.addEventListener(e,fnc,false);
                    } else if (element.attachEvent) {
                        element.attachEvent("on"+e,fnc);
                    }
                }
                if (!(e in OZ.Event._byName)) { OZ.Event._byName[e] = {}; }
                OZ.Event._byName[e][id] = rec;
            }
            OZ.Event._byID[id] = rec;
            return id;
        },
        remove:function(id) {
            var rec = OZ.Event._byID[id];
            if (!rec) { return; }
            var elm = rec[0];
            var parts = rec[1].split(" ");
            while (parts.length) {
                var e = parts.pop();
                if (elm) {
                    if (elm.removeEventListener) {
                        elm.removeEventListener(e,rec[2],false);
                    } else if (elm.detachEvent) {
                        elm.detachEvent("on"+e,rec[2]);
                    }
                }
                delete OZ.Event._byName[e][id];
            }
            delete OZ.Event._byID[id];
        },
        stop:function(e) { e.stopPropagation ? e.stopPropagation() : e.cancelBubble = true; },
        prevent:function(e) { e.preventDefault ? e.preventDefault() : e.returnValue = false; },
        target:function(e) { return e.target || e.srcElement; }
    },
    Class:function() {
        var c = function() {
            var init = arguments.callee.prototype.init;
            if (init) { init.apply(this,arguments); }
        };
        c.implement = function(parent) {
            for (var p in parent.prototype) { this.prototype[p] = parent.prototype[p]; }
            return this;
        };
        c.extend = function(parent) {
            var tmp = function(){};
            tmp.prototype = parent.prototype;
            this.prototype = new tmp();
            this.prototype.constructor = this;
            return this;
        };
        c.prototype.bind = function(fnc) { return fnc.bind(this); };
        c.prototype.dispatch = function(type, data) {
            var obj = {
                type:type,
                target:this,
                timeStamp:(new Date()).getTime(),
                data:data
            }
            var tocall = [];
            var list = OZ.Event._byName[type];
            for (var id in list) {
                var item = list[id];
                if (!item[0] || item[0] == this) { tocall.push(item[2]); }
            }
            var len = tocall.length;
            for (var i=0;i<len;i++) { tocall[i](obj); }
        }
        return c;
    },
    DOM:{
        elm:function(name, opts) {
            var elm = document.createElement(name);
            for (var p in opts) {
                var val = opts[p];
                if (p == "class") { p = "className"; }
                if (p in elm) { elm[p] = val; }
            }
            OZ.Style.set(elm, opts);
            return elm;
        },
        text:function(str) { return document.createTextNode(str); },
        clear:function(node) { while (node.firstChild) {node.removeChild(node.firstChild);} },
        pos:function(elm) { /* relative to _viewport_ */
            var cur = OZ.$(elm);
            var html = cur.ownerDocument.documentElement;
            var parent = cur.parentNode;
            var x = y = 0;
            if (cur == html) { return [x,y]; }
            while (1) {
                if (OZ.Style.get(cur,"position") == "fixed") {
                    x += cur.offsetLeft;
                    y += cur.offsetTop;
                    return [x,y];
                }

                if (OZ.opera && (parent == html || OZ.Style.get(cur,"display") != "block")) { } else {
                    x -= parent.scrollLeft;
                    y -= parent.scrollTop;
                }
                if (parent == cur.offsetParent || cur.parentNode == html) {
                    x += cur.offsetLeft;
                    y += cur.offsetTop;
                    cur = parent;
                }

                if (parent == html) { return [x,y]; }
                parent = parent.parentNode;
            }
        },
        scroll:function() {
            var x = document.documentElement.scrollLeft || document.body.scrollLeft || 0;
            var y = document.documentElement.scrollTop || document.body.scrollTop || 0;
            return [x,y];
        },
        win:function(avail) {
            return (avail ? [window.innerWidth,window.innerHeight] : [document.documentElement.clientWidth,document.documentElement.clientHeight]);
        },
        hasClass:function(node, className) {
            var cn = OZ.$(node).className;
            var arr = (cn ? cn.split(" ") : []);
            return (arr.indexOf(className) != -1);
        },
        addClass:function(node,className) {
            if (OZ.DOM.hasClass(node, className)) { return; }
            var cn = OZ.$(node).className;
            var arr = (cn ? cn.split(" ") : []);
            arr.push(className);
            OZ.$(node).className = arr.join(" ");
        },
        removeClass:function(node, className) {
            if (!OZ.DOM.hasClass(node, className)) { return; }
            var cn = OZ.$(node).className;
            var arr = (cn ? cn.split(" ") : []);
            var arr = arr.filter(function($){ return $ != className; });
            OZ.$(node).className = arr.join(" ");
        },
        append:function() {
            if (arguments.length == 1) {
                var arr = arguments[0];
                var root = OZ.$(arr[0]);
                for (var i=1;i<arr.length;i++) { root.appendChild(OZ.$(arr[i])); }
            } else for (var i=0;i<arguments.length;i++) { OZ.DOM.append(arguments[i]); }
        }
    },
    Style:{
        get:function(elm, prop) {
            if (document.defaultView && document.defaultView.getComputedStyle) {
                try {
                    var cs = elm.ownerDocument.defaultView.getComputedStyle(elm,"");
                } catch(e) {
                    return false;
                }
                if (!cs) { return false; }
                return cs[prop];
            } else {
                return elm.currentStyle[prop];
            }
        },
        set:function(elm, obj) {
            for (var p in obj) {
                var val = obj[p];
                if (p == "opacity" && OZ.ie) {
                    p = "filter";
                    val = "alpha(opacity="+Math.round(100*val)+")";
                    elm.style.zoom = 1;
                } else if (p == "float") {
                    p = (OZ.ie ? "styleFloat" : "cssFloat");
                }
                if (p in elm.style) { elm.style[p] = val; }
            }
        }
    },
    Request:function(url, callback, options) {
        var o = {data:false, method:"get", headers:{}, xml:false}
        for (var p in options) { o[p] = options[p]; }
        o.method = o.method.toUpperCase();

        var xhr = false;
        if (window.XMLHttpRequest) { xhr = new XMLHttpRequest(); }
        else if (window.ActiveXObject) { xhr = new ActiveXObject("Microsoft.XMLHTTP"); }
        else { return false; }
        xhr.open(o.method, url, true);
        xhr.onreadystatechange = function() {
            if (xhr.readyState != 4) { return; }
            if (!callback) { return; }
            var data = (o.xml ? xhr.responseXML : xhr.responseText);
            var headers = {};
            var h = xhr.getAllResponseHeaders();
            if (h) {
                h = h.split(/[\r\n]/);
                for (var i=0;i<h.length;i++) if (h[i]) {
                    var v = h[i].match(/^([^:]+): *(.*)$/);
                    headers[v[1]] = v[2];
                }
            }
            callback(data,xhr.status,headers);
        };
        if (o.method == "POST") { xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded"); }
        for (var p in o.headers) { xhr.setRequestHeader(p,o.headers[p]); }
        xhr.send(o.data || null);
        return xhr;
    }
}

if (!Function.prototype.bind) {
    Function.prototype.bind = function(thisObj) {
        var fn = this;
        var args = Array.prototype.slice.call(arguments, 1);
        return function() {
            return fn.apply(thisObj, args.concat(Array.prototype.slice.call(arguments)));
        }
    }
};

if (!Array.prototype.indexOf) {
    Array.prototype.indexOf = function(item, from) {
        var len = this.length;
        var i = from || 0;
        if (i < 0) { i += len; }
        for (;i<len;i++) {
            if (i in this && this[i] === item) { return i; }
        }
        return -1;
    }
}
if (!Array.indexOf) {
    Array.indexOf = function(obj, item, from) { return Array.prototype.indexOf.call(obj, item, from); }
}

if (!Array.prototype.lastIndexOf) {
    Array.prototype.lastIndexOf = function(item, from) {
        var len = this.length;
        var i = from || len-1;
        if (i < 0) { i += len; }
        for (;i>-1;i--) {
            if (i in this && this[i] === item) { return i; }
        }
        return -1;
    }
}
if (!Array.lastIndexOf) {
    Array.lastIndexOf = function(obj, item, from) { return Array.prototype.lastIndexOf.call(obj, item, from); }
}

if (!Array.prototype.forEach) {
    Array.prototype.forEach = function(cb, _this) {
        var len = this.length;
        for (var i=0;i<len;i++) {
            if (i in this) { cb.call(_this, this[i], i, this); }
        }
    }
}
if (!Array.forEach) {
    Array.forEach = function(obj, cb, _this) { Array.prototype.forEach.call(obj, cb, _this); }
}

if (!Array.prototype.every) {
    Array.prototype.every = function(cb, _this) {
        var len = this.length;
        for (var i=0;i<len;i++) {
            if (i in this && !cb.call(_this, this[i], i, this)) { return false; }
        }
        return true;
    }
}
if (!Array.every) {
    Array.every = function(obj, cb, _this) { return Array.prototype.every.call(obj, cb, _this); }
}

if (!Array.prototype.some) {
    Array.prototype.some = function(cb, _this) {
        var len = this.length;
        for (var i=0;i<len;i++) {
            if (i in this && cb.call(_this, this[i], i, this)) { return true; }
        }
        return false;
    }
}
if (!Array.some) {
    Array.some = function(obj, cb, _this) { return Array.prototype.some.call(obj, cb, _this); }
}

if (!Array.prototype.map) {
    Array.prototype.map = function(cb, _this) {
        var len = this.length;
        var res = new Array(len);
        for (var i=0;i<len;i++) {
            if (i in this) { res[i] = cb.call(_this, this[i], i, this); }
        }
        return res;
    }
}
if (!Array.map) {
    Array.map = function(obj, cb, _this) { return Array.prototype.map.call(obj, cb, _this); }
}

if (!Array.prototype.filter) {
    Array.prototype.filter = function(cb, _this) {
        var len = this.length;
        var res = [];
            for (var i=0;i<len;i++) {
                if (i in this) {
                    var val = this[i];
                    if (cb.call(_this, val, i, this)) { res.push(val); }
                }
            }
        return res;
    }
}
if (!Array.filter) {
    Array.filter = function(obj, cb, _this) { return Array.prototype.filter.call(obj, cb, _this); }
}