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diff --git a/frontend/gamma/js/MochiKit/Style.js b/frontend/gamma/js/MochiKit/Style.js
new file mode 100644
index 0000000..7f10117
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+++ b/frontend/gamma/js/MochiKit/Style.js
@@ -0,0 +1,558 @@
+/***
+
+MochiKit.Style 1.5
+
+See <http://mochikit.com/> for documentation, downloads, license, etc.
+
+(c) 2005-2006 Bob Ippolito, Beau Hartshorne.  All rights Reserved.
+
+***/
+
+MochiKit.Base._module('Style', '1.5', ['Base', 'DOM']);
+
+
+/** @id MochiKit.Style.Dimensions */
+MochiKit.Style.Dimensions = function (w, h) {
+    if (!(this instanceof MochiKit.Style.Dimensions)) {
+        return new MochiKit.Style.Dimensions(w, h);
+    }
+    this.w = w;
+    this.h = h;
+};
+
+MochiKit.Style.Dimensions.prototype.__repr__ = function () {
+    var repr = MochiKit.Base.repr;
+    return '{w: '  + repr(this.w) + ', h: ' + repr(this.h) + '}';
+};
+
+MochiKit.Style.Dimensions.prototype.toString = function () {
+    return this.__repr__();
+};
+
+
+/** @id MochiKit.Style.Coordinates */
+MochiKit.Style.Coordinates = function (x, y) {
+    if (!(this instanceof MochiKit.Style.Coordinates)) {
+        return new MochiKit.Style.Coordinates(x, y);
+    }
+    this.x = x;
+    this.y = y;
+};
+
+MochiKit.Style.Coordinates.prototype.__repr__ = function () {
+    var repr = MochiKit.Base.repr;
+    return '{x: '  + repr(this.x) + ', y: ' + repr(this.y) + '}';
+};
+
+MochiKit.Style.Coordinates.prototype.toString = function () {
+    return this.__repr__();
+};
+
+
+MochiKit.Base.update(MochiKit.Style, {
+
+    /** @id MochiKit.Style.getStyle */
+    getStyle: function (elem, cssProperty) {
+        var dom = MochiKit.DOM;
+        var d = dom._document;
+
+        elem = dom.getElement(elem);
+        cssProperty = MochiKit.Base.camelize(cssProperty);
+
+        if (!elem || elem == d) {
+            return undefined;
+        }
+        if (cssProperty == 'opacity' && typeof(elem.filters) != 'undefined') {
+            var opacity = (MochiKit.Style.getStyle(elem, 'filter') || '').match(/alpha\(opacity=(.*)\)/);
+            if (opacity && opacity[1]) {
+                return parseFloat(opacity[1]) / 100;
+            }
+            return 1.0;
+        }
+        if (cssProperty == 'float' || cssProperty == 'cssFloat' || cssProperty == 'styleFloat') {
+            if (elem.style["float"]) {
+                return elem.style["float"];
+            } else if (elem.style.cssFloat) {
+                return elem.style.cssFloat;
+            } else if (elem.style.styleFloat) {
+                return elem.style.styleFloat;
+            } else {
+                return "none";
+            }
+        }
+        var value = elem.style ? elem.style[cssProperty] : null;
+        if (!value) {
+            if (d.defaultView && d.defaultView.getComputedStyle) {
+                var css = d.defaultView.getComputedStyle(elem, null);
+                cssProperty = cssProperty.replace(/([A-Z])/g, '-$1'
+                    ).toLowerCase(); // from dojo.style.toSelectorCase
+                value = css ? css.getPropertyValue(cssProperty) : null;
+            } else if (elem.currentStyle) {
+                value = elem.currentStyle[cssProperty];
+                if (/^\d/.test(value) && !/px$/.test(value) && cssProperty != 'fontWeight') {
+                    /* Convert to px using an hack from Dean Edwards */
+                    var left = elem.style.left;
+                    var rsLeft = elem.runtimeStyle.left;
+                    elem.runtimeStyle.left = elem.currentStyle.left;
+                    elem.style.left = value || 0;
+                    value = elem.style.pixelLeft + "px";
+                    elem.style.left = left;
+                    elem.runtimeStyle.left = rsLeft;
+                }
+            }
+        }
+        if (cssProperty == 'opacity') {
+            value = parseFloat(value);
+        }
+
+        if (/Opera/.test(navigator.userAgent) && (MochiKit.Base.findValue(['left', 'top', 'right', 'bottom'], cssProperty) != -1)) {
+            if (MochiKit.Style.getStyle(elem, 'position') == 'static') {
+                value = 'auto';
+            }
+        }
+
+        return value == 'auto' ? null : value;
+    },
+
+    /** @id MochiKit.Style.setStyle */
+    setStyle: function (elem, style) {
+        elem = MochiKit.DOM.getElement(elem);
+        for (var name in style) {
+            switch (name) {
+            case 'opacity':
+                MochiKit.Style.setOpacity(elem, style[name]);
+                break;
+            case 'float':
+            case 'cssFloat':
+            case 'styleFloat':
+                if (typeof(elem.style["float"]) != "undefined") {
+                    elem.style["float"] = style[name];
+                } else if (typeof(elem.style.cssFloat) != "undefined") {
+                    elem.style.cssFloat = style[name];
+                } else {
+                    elem.style.styleFloat = style[name];
+                }
+                break;
+            default:
+                elem.style[MochiKit.Base.camelize(name)] = style[name];
+            }
+        }
+    },
+
+    /** @id MochiKit.Style.setOpacity */
+    setOpacity: function (elem, o) {
+        elem = MochiKit.DOM.getElement(elem);
+        var self = MochiKit.Style;
+        if (o == 1) {
+            var toSet = /Gecko/.test(navigator.userAgent) && !(/Konqueror|AppleWebKit|KHTML/.test(navigator.userAgent));
+            elem.style["opacity"] = toSet ? 0.999999 : 1.0;
+            if (/MSIE/.test(navigator.userAgent)) {
+                elem.style['filter'] =
+                    self.getStyle(elem, 'filter').replace(/alpha\([^\)]*\)/gi, '');
+            }
+        } else {
+            if (o < 0.00001) {
+                o = 0;
+            }
+            elem.style["opacity"] = o;
+            if (/MSIE/.test(navigator.userAgent)) {
+                elem.style['filter'] =
+                    self.getStyle(elem, 'filter').replace(/alpha\([^\)]*\)/gi, '') + 'alpha(opacity=' + o * 100 + ')';
+            }
+        }
+    },
+
+    /*
+
+        getElementPosition is adapted from YAHOO.util.Dom.getXY v0.9.0.
+        Copyright: Copyright (c) 2006, Yahoo! Inc. All rights reserved.
+        License: BSD, http://developer.yahoo.net/yui/license.txt
+
+    */
+
+    /** @id MochiKit.Style.getElementPosition */
+    getElementPosition: function (elem, /* optional */relativeTo) {
+        var self = MochiKit.Style;
+        var dom = MochiKit.DOM;
+        var isCoordinates = function (o) {
+            return o != null &&
+                   o.nodeType == null &&
+                   typeof(o.x) == "number" &&
+                   typeof(o.y) == "number";
+        }
+
+        if (typeof(elem) == "string") {
+            elem = dom.getElement(elem);
+        }
+        if (elem == null ||
+            (!isCoordinates(elem) && self.getStyle(elem, 'display') == 'none')) {
+            return undefined;
+        }
+
+        var c = new self.Coordinates(0, 0);
+        var box = null;
+        var parent = null;
+
+        var d = MochiKit.DOM._document;
+        var de = d.documentElement;
+        var b = d.body;
+
+        if (!elem.parentNode && elem.x && elem.y) {
+            /* it's just a MochiKit.Style.Coordinates object */
+            c.x += elem.x || 0;
+            c.y += elem.y || 0;
+        } else if (elem.getBoundingClientRect) { // IE shortcut
+            /*
+
+                The IE shortcut can be off by two. We fix it. See:
+                http://msdn.microsoft.com/workshop/author/dhtml/reference/methods/getboundingclientrect.asp
+
+                This is similar to the method used in
+                MochiKit.Signal.Event.mouse().
+
+            */
+            box = elem.getBoundingClientRect();
+
+            c.x += box.left +
+                (de.scrollLeft || b.scrollLeft) -
+                (de.clientLeft || 0);
+
+            c.y += box.top +
+                (de.scrollTop || b.scrollTop) -
+                (de.clientTop || 0);
+
+        } else if (elem.offsetParent) {
+            c.x += elem.offsetLeft;
+            c.y += elem.offsetTop;
+            parent = elem.offsetParent;
+
+            if (parent != elem) {
+                while (parent) {
+                    c.x += parseInt(parent.style.borderLeftWidth) || 0;
+                    c.y += parseInt(parent.style.borderTopWidth) || 0;
+                    c.x += parent.offsetLeft;
+                    c.y += parent.offsetTop;
+                    parent = parent.offsetParent;
+                }
+            }
+
+            /*
+
+                Opera < 9 and old Safari (absolute) incorrectly account for
+                body offsetTop and offsetLeft.
+
+            */
+            var ua = navigator.userAgent.toLowerCase();
+            if ((typeof(opera) != 'undefined' &&
+                parseFloat(opera.version()) < 9) ||
+                (ua.indexOf('AppleWebKit') != -1 &&
+                self.getStyle(elem, 'position') == 'absolute')) {
+
+                c.x -= b.offsetLeft;
+                c.y -= b.offsetTop;
+
+            }
+
+            // Adjust position for strange Opera scroll bug
+            if (elem.parentNode) {
+                parent = elem.parentNode;
+            } else {
+                parent = null;
+            }
+            while (parent) {
+                var tagName = parent.tagName.toUpperCase();
+                if (tagName === 'BODY' || tagName === 'HTML') {
+                    break;
+                }
+                var disp = self.getStyle(parent, 'display');
+                // Handle strange Opera bug for some display
+                if (disp.search(/^inline|table-row.*$/i)) {
+                    c.x -= parent.scrollLeft;
+                    c.y -= parent.scrollTop;
+                }
+                if (parent.parentNode) {
+                    parent = parent.parentNode;
+                } else {
+                    parent = null;
+                }
+            }
+        }
+
+        if (relativeTo) {
+            relativeTo = arguments.callee(relativeTo);
+            if (relativeTo) {
+                c.x -= (relativeTo.x || 0);
+                c.y -= (relativeTo.y || 0);
+            }
+        }
+
+        return c;
+    },
+
+    /** @id MochiKit.Style.setElementPosition */
+    setElementPosition: function (elem, newPos/* optional */, units) {
+        elem = MochiKit.DOM.getElement(elem);
+        if (typeof(units) == 'undefined') {
+            units = 'px';
+        }
+        var newStyle = {};
+        var isUndefNull = MochiKit.Base.isUndefinedOrNull;
+        if (!isUndefNull(newPos.x)) {
+            newStyle['left'] = newPos.x + units;
+        }
+        if (!isUndefNull(newPos.y)) {
+            newStyle['top'] = newPos.y + units;
+        }
+        MochiKit.DOM.updateNodeAttributes(elem, {'style': newStyle});
+    },
+
+    /** @id MochiKit.Style.makePositioned */
+    makePositioned: function (element) {
+        element = MochiKit.DOM.getElement(element);
+        var pos = MochiKit.Style.getStyle(element, 'position');
+        if (pos == 'static' || !pos) {
+            element.style.position = 'relative';
+            // Opera returns the offset relative to the positioning context,
+            // when an element is position relative but top and left have
+            // not been defined
+            if (/Opera/.test(navigator.userAgent)) {
+                element.style.top = 0;
+                element.style.left = 0;
+            }
+        }
+    },
+
+    /** @id MochiKit.Style.undoPositioned */
+    undoPositioned: function (element) {
+        element = MochiKit.DOM.getElement(element);
+        if (element.style.position == 'relative') {
+            element.style.position = element.style.top = element.style.left = element.style.bottom = element.style.right = '';
+        }
+    },
+
+    /** @id MochiKit.Style.makeClipping */
+    makeClipping: function (element) {
+        element = MochiKit.DOM.getElement(element);
+        var s = element.style;
+        var oldOverflow = { 'overflow': s.overflow,
+                            'overflow-x': s.overflowX,
+                            'overflow-y': s.overflowY };
+        if ((MochiKit.Style.getStyle(element, 'overflow') || 'visible') != 'hidden') {
+            element.style.overflow = 'hidden';
+            element.style.overflowX = 'hidden';
+            element.style.overflowY = 'hidden';
+        }
+        return oldOverflow;
+    },
+
+    /** @id MochiKit.Style.undoClipping */
+    undoClipping: function (element, overflow) {
+        element = MochiKit.DOM.getElement(element);
+        if (typeof(overflow) == 'string') {
+            element.style.overflow = overflow;
+        } else if (overflow != null) {
+            element.style.overflow = overflow['overflow'];
+            element.style.overflowX = overflow['overflow-x'];
+            element.style.overflowY = overflow['overflow-y'];
+        }
+    },
+
+    /** @id MochiKit.Style.getElementDimensions */
+    getElementDimensions: function (elem, contentSize/*optional*/) {
+        var self = MochiKit.Style;
+        var dom = MochiKit.DOM;
+        if (typeof(elem.w) == 'number' || typeof(elem.h) == 'number') {
+            return new self.Dimensions(elem.w || 0, elem.h || 0);
+        }
+        elem = dom.getElement(elem);
+        if (!elem) {
+            return undefined;
+        }
+        var disp = self.getStyle(elem, 'display');
+        // display can be empty/undefined on WebKit/KHTML
+        if (disp == 'none' || disp == '' || typeof(disp) == 'undefined') {
+            var s = elem.style;
+            var originalVisibility = s.visibility;
+            var originalPosition = s.position;
+            var originalDisplay = s.display;
+            s.visibility = 'hidden';
+            s.position = 'absolute';
+            s.display = self._getDefaultDisplay(elem);
+            var originalWidth = elem.offsetWidth;
+            var originalHeight = elem.offsetHeight;
+            s.display = originalDisplay;
+            s.position = originalPosition;
+            s.visibility = originalVisibility;
+        } else {
+            originalWidth = elem.offsetWidth || 0;
+            originalHeight = elem.offsetHeight || 0;
+        }
+        if (contentSize) {
+            var tableCell = 'colSpan' in elem && 'rowSpan' in elem;
+            var collapse = (tableCell && elem.parentNode && self.getStyle(
+                    elem.parentNode, 'borderCollapse') == 'collapse')
+            if (collapse) {
+                if (/MSIE/.test(navigator.userAgent)) {
+                    var borderLeftQuota = elem.previousSibling? 0.5 : 1;
+                    var borderRightQuota = elem.nextSibling? 0.5 : 1;
+                }
+                else {
+                    var borderLeftQuota = 0.5;
+                    var borderRightQuota = 0.5;
+                }
+            } else {
+                var borderLeftQuota = 1;
+                var borderRightQuota = 1;
+            }
+            originalWidth -= Math.round(
+                (parseFloat(self.getStyle(elem, 'paddingLeft')) || 0)
+              + (parseFloat(self.getStyle(elem, 'paddingRight')) || 0)
+              + borderLeftQuota *
+                (parseFloat(self.getStyle(elem, 'borderLeftWidth')) || 0)
+              + borderRightQuota *
+                (parseFloat(self.getStyle(elem, 'borderRightWidth')) || 0)
+            );
+            if (tableCell) {
+                if (/Gecko|Opera/.test(navigator.userAgent)
+                    && !/Konqueror|AppleWebKit|KHTML/.test(navigator.userAgent)) {
+                    var borderHeightQuota = 0;
+                } else if (/MSIE/.test(navigator.userAgent)) {
+                    var borderHeightQuota = 1;
+                } else {
+                    var borderHeightQuota = collapse? 0.5 : 1;
+                }
+            } else {
+                var borderHeightQuota = 1;
+            }
+            originalHeight -= Math.round(
+                (parseFloat(self.getStyle(elem, 'paddingTop')) || 0)
+              + (parseFloat(self.getStyle(elem, 'paddingBottom')) || 0)
+              + borderHeightQuota * (
+                (parseFloat(self.getStyle(elem, 'borderTopWidth')) || 0)
+              + (parseFloat(self.getStyle(elem, 'borderBottomWidth')) || 0))
+            );
+        }
+        return new self.Dimensions(originalWidth, originalHeight);
+    },
+
+    /** @id MochiKit.Style.setElementDimensions */
+    setElementDimensions: function (elem, newSize/* optional */, units) {
+        elem = MochiKit.DOM.getElement(elem);
+        if (typeof(units) == 'undefined') {
+            units = 'px';
+        }
+        var newStyle = {};
+        var isUndefNull = MochiKit.Base.isUndefinedOrNull;
+        if (!isUndefNull(newSize.w)) {
+            newStyle['width'] = newSize.w + units;
+        }
+        if (!isUndefNull(newSize.h)) {
+            newStyle['height'] = newSize.h + units;
+        }
+        MochiKit.DOM.updateNodeAttributes(elem, {'style': newStyle});
+    },
+
+    _getDefaultDisplay: function (elem) {
+        var self = MochiKit.Style;
+        var dom = MochiKit.DOM;
+        elem = dom.getElement(elem);
+        if (!elem) {
+            return undefined;
+        }
+        var tagName = elem.tagName.toUpperCase();
+        return self._defaultDisplay[tagName] || 'block';
+    },
+
+    /** @id MochiKit.Style.setDisplayForElement */
+    setDisplayForElement: function (display, element/*, ...*/) {
+        var elements = MochiKit.Base.extend(null, arguments, 1);
+        var getElement = MochiKit.DOM.getElement;
+        for (var i = 0; i < elements.length; i++) {
+            element = getElement(elements[i]);
+            if (element) {
+                element.style.display = display;
+            }
+        }
+    },
+
+    /** @id MochiKit.Style.getViewportDimensions */
+    getViewportDimensions: function () {
+        var d = new MochiKit.Style.Dimensions();
+        var w = MochiKit.DOM._window;
+        var b = MochiKit.DOM._document.body;
+        if (w.innerWidth) {
+            d.w = w.innerWidth;
+            d.h = w.innerHeight;
+        } else if (b && b.parentElement && b.parentElement.clientWidth) {
+            d.w = b.parentElement.clientWidth;
+            d.h = b.parentElement.clientHeight;
+        } else if (b && b.clientWidth) {
+            d.w = b.clientWidth;
+            d.h = b.clientHeight;
+        }
+        return d;
+    },
+
+    /** @id MochiKit.Style.getViewportPosition */
+    getViewportPosition: function () {
+        var c = new MochiKit.Style.Coordinates(0, 0);
+        var d = MochiKit.DOM._document;
+        var de = d.documentElement;
+        var db = d.body;
+        if (de && (de.scrollTop || de.scrollLeft)) {
+            c.x = de.scrollLeft;
+            c.y = de.scrollTop;
+        } else if (db) {
+            c.x = db.scrollLeft;
+            c.y = db.scrollTop;
+        }
+        return c;
+    },
+
+    __new__: function () {
+        var m = MochiKit.Base;
+
+        var inlines = ['A','ABBR','ACRONYM','B','BASEFONT','BDO','BIG','BR',
+                       'CITE','CODE','DFN','EM','FONT','I','IMG','KBD','LABEL',
+                       'Q','S','SAMP','SMALL','SPAN','STRIKE','STRONG','SUB',
+                       'SUP','TEXTAREA','TT','U','VAR'];
+        this._defaultDisplay = { 'TABLE': 'table',
+                                 'THEAD': 'table-header-group',
+                                 'TBODY': 'table-row-group',
+                                 'TFOOT': 'table-footer-group',
+                                 'COLGROUP': 'table-column-group',
+                                 'COL': 'table-column',
+                                 'TR': 'table-row',
+                                 'TD': 'table-cell',
+                                 'TH': 'table-cell',
+                                 'CAPTION': 'table-caption',
+                                 'LI': 'list-item',
+                                 'INPUT': 'inline-block',
+                                 'SELECT': 'inline-block' };
+        // CSS 'display' support in IE6/7 is just broken...
+        if (/MSIE/.test(navigator.userAgent)) {
+            for (var k in this._defaultDisplay) {
+                var v = this._defaultDisplay[k];
+                if (v.indexOf('table') == 0) {
+                    this._defaultDisplay[k] = 'block';
+                }
+            }
+        }
+        for (var i = 0; i < inlines.length; i++) {
+            this._defaultDisplay[inlines[i]] = 'inline';
+        }
+
+        // Backwards compatibility aliases
+        m._deprecated(this, 'elementPosition', 'MochiKit.Style.getElementPosition', '1.3');
+        m._deprecated(this, 'elementDimensions', 'MochiKit.Style.getElementDimensions', '1.3');
+
+        this.hideElement = m.partial(this.setDisplayForElement, 'none');
+        // TODO: showElement could be improved by using getDefaultDisplay.
+        this.showElement = m.partial(this.setDisplayForElement, 'block');
+
+        m.nameFunctions(this);
+    }
+});
+
+MochiKit.Style.__new__();
+MochiKit.Base._exportSymbols(this, MochiKit.Style);