var addNamespace = function(ns) {
    var nsParts = ns.split(".");
    var root = window;
    for(var i=0; i<nsParts.length; i++) {
        if(typeof root[nsParts[i]] == "undefined")
            root[nsParts[i]] = {};
        root = root[nsParts[i]];
    }
};

Object.extend(window, {
    $: function() {
        var elements = [];
        for(var i=0; i<arguments.length; i++) {
            var e = arguments[i];
            if(typeof e == 'string')
                e = document.getElementById(e);
            if (arguments.length == 1)
                return e;
            elements.push(e);
        }
        return elements;
    },
    Class: {
        create: function() {
            return function() {
                if(typeof this.initialize == "function")
                    this.initialize.apply(this, arguments);
            }
        }
    }
});

addNamespace("MS.Debug");
MS.Debug = {};      // has been removed to debug version of core.ashx

addNamespace("MS.Position");

Object.extend(MS.Position, {
    getLocation: function(element) {
        var x = 0;
        var y = 0;
        while (element!=null) {
            if (element.tagName!="TR") {
                if (element.offsetLeft!=null) {
                    x += element.offsetLeft;
                }
                if (element.offsetTop!=null) {
                    y += element.offsetTop;
                }
            }
            element = element.parentNode;
        }
        return {left:x,top:y};
    },
    getBounds: function(ele) {
        var offset = MS.Position.getLocation(ele);
        var width = ele.offsetWidth;
        var height = ele.offsetHeight;
        return {left:offset.left, top:offset.top, width:width, height:height};
    },
    setLocation: function(ele, loc) {
        ele.style.position = "absolute";
        ele.style.left = loc.left + "px";
        ele.style.top = loc.top + "px";
    },
    setBounds: function(ele, rect) {
        if(rect.left && rect.top)
            MS.Position.setLocation(ele, rect);
        ele.style.width = rect.width + "px";
        ele.style.height = rect.height + "px";
    }
});

addNamespace("MS.Keys");

Object.extend(MS.Keys, {
    TAB: 9,
    ESC: 27,
    KEYUP: 38,
    KEYDOWN: 40,
    KEYLEFT: 37,
    KEYRIGHT: 39,
    SHIFT: 16,
    CTRL: 17,
    ALT: 18,
    ENTER: 13,
    getCode: function(e) {
        e = MS.getEvent(e);
        if(e != null) return e.keyCode;
        return -1;
    }
});

Object.extend(MS, {
    setText: function(ele, text) {
        if(ele == null) return;
        if(document.all)
            ele.innerText = text;
        else
            ele.textContent = text;
    },
    setHtml: function(ele, html) {
        if(ele == null) return;
        ele.innerHTML = html;
    },
    cancelEvent: function(e) {
        e = MS.getEvent(e);
        if(window.event)
            e.returnValue = false;
        else if(e) {
            e.preventDefault();
            e.stopPropagation();
        }
    },
    getEvent: function(e) {
        if(window.event) return window.event;
        if(e) return e;
        return null;
    },
    getTarget: function(e) {
        e = MS.getEvent(e);
        if(window.event) return e.srcElement;
        if(e) return e.target;
    }
});

var StringBuilder = function() {
    this.v = [];
}

Object.extend(StringBuilder.prototype, {
    append: function(s) {
        this.v.push(s);
    },
    appendLine: function(s) {
        this.v.push(s + "\r\n");
    },
    clear: function() {
        this.v.clear();
    },
    toString: function() {
        return v.join("");
    }
});