-// Copyright (c) 2005-2007 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
-// (c) 2005-2007 Sammi Williams (http://www.oriontransfer.co.nz, sammi@oriontransfer.co.nz)
-//
+// script.aculo.us dragdrop.js v1.8.3, Thu Oct 08 11:23:33 +0200 2009
+
+// Copyright (c) 2005-2009 Thomas Fuchs (http://script.aculo.us, http://mir.aculo.us)
+//
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
// script.aculo.us is freely distributable under the terms of an MIT-style license.
// For details, see the script.aculo.us web site: http://script.aculo.us/
if(options.accept) options.accept = [options.accept].flatten();
Element.makePositioned(element); // fix IE
if(options.accept) options.accept = [options.accept].flatten();
Element.makePositioned(element); // fix IE
for (i = 1; i < drops.length; ++i)
if (Element.isParent(drops[i].element, deepest.element))
deepest = drops[i];
for (i = 1; i < drops.length; ++i)
if (Element.isParent(drops[i].element, deepest.element))
deepest = drops[i];
} else {
containmentNode = element.parentNode;
}
return drop._containers.detect(function(c) { return containmentNode == c });
},
} else {
containmentNode = element.parentNode;
}
return drop._containers.detect(function(c) { return containmentNode == c });
},
isAffected: function(point, element, drop) {
return (
(drop.element!=element) &&
((!drop._containers) ||
this.isContained(element, drop)) &&
((!drop.accept) ||
isAffected: function(point, element, drop) {
return (
(drop.element!=element) &&
((!drop._containers) ||
this.isContained(element, drop)) &&
((!drop.accept) ||
function(v) { return drop.accept.include(v) } ) )) &&
Position.within(drop.element, point[0], point[1]) );
},
function(v) { return drop.accept.include(v) } ) )) &&
Position.within(drop.element, point[0], point[1]) );
},
show: function(point, element) {
if(!this.drops.length) return;
var drop, affected = [];
show: function(point, element) {
if(!this.drops.length) return;
var drop, affected = [];
this.drops.each( function(drop) {
if(Droppables.isAffected(point, element, drop))
affected.push(drop);
});
this.drops.each( function(drop) {
if(Droppables.isAffected(point, element, drop))
affected.push(drop);
});
Position.within(drop.element, point[0], point[1]);
if(drop.onHover)
drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
Position.within(drop.element, point[0], point[1]);
if(drop.onHover)
drop.onHover(element, drop.element, Position.overlap(drop.overlap, drop.element));
if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
if (this.last_active.onDrop) {
if (this.isAffected([Event.pointerX(event), Event.pointerY(event)], element, this.last_active))
if (this.last_active.onDrop) {
register: function(draggable) {
if(this.drags.length == 0) {
this.eventMouseUp = this.endDrag.bindAsEventListener(this);
this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
this.eventKeypress = this.keyPress.bindAsEventListener(this);
register: function(draggable) {
if(this.drags.length == 0) {
this.eventMouseUp = this.endDrag.bindAsEventListener(this);
this.eventMouseMove = this.updateDrag.bindAsEventListener(this);
this.eventKeypress = this.keyPress.bindAsEventListener(this);
Event.observe(document, "mouseup", this.eventMouseUp);
Event.observe(document, "mousemove", this.eventMouseMove);
Event.observe(document, "keypress", this.eventKeypress);
}
this.drags.push(draggable);
},
Event.observe(document, "mouseup", this.eventMouseUp);
Event.observe(document, "mousemove", this.eventMouseMove);
Event.observe(document, "keypress", this.eventKeypress);
}
this.drags.push(draggable);
},
unregister: function(draggable) {
this.drags = this.drags.reject(function(d) { return d==draggable });
if(this.drags.length == 0) {
unregister: function(draggable) {
this.drags = this.drags.reject(function(d) { return d==draggable });
if(this.drags.length == 0) {
- if(draggable.options.delay) {
- this._timeout = setTimeout(function() {
- Draggables._timeout = null;
- window.focus();
- Draggables.activeDraggable = draggable;
- }.bind(this), draggable.options.delay);
+ if(draggable.options.delay) {
+ this._timeout = setTimeout(function() {
+ Draggables._timeout = null;
+ window.focus();
+ Draggables.activeDraggable = draggable;
+ }.bind(this), draggable.options.delay);
} else {
window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
this.activeDraggable = draggable;
}
},
} else {
window.focus(); // allows keypress events if window isn't currently focused, fails for Safari
this.activeDraggable = draggable;
}
},
updateDrag: function(event) {
if(!this.activeDraggable) return;
var pointer = [Event.pointerX(event), Event.pointerY(event)];
updateDrag: function(event) {
if(!this.activeDraggable) return;
var pointer = [Event.pointerX(event), Event.pointerY(event)];
// the same coordinates, prevent needless redrawing (moz bug?)
if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
this._lastPointer = pointer;
// the same coordinates, prevent needless redrawing (moz bug?)
if(this._lastPointer && (this._lastPointer.inspect() == pointer.inspect())) return;
this._lastPointer = pointer;
}
if(!this.activeDraggable) return;
this._lastPointer = null;
this.activeDraggable.endDrag(event);
this.activeDraggable = null;
},
}
if(!this.activeDraggable) return;
this._lastPointer = null;
this.activeDraggable.endDrag(event);
this.activeDraggable = null;
},
addObserver: function(observer) {
this.observers.push(observer);
this._cacheObserverCallbacks();
},
addObserver: function(observer) {
this.observers.push(observer);
this._cacheObserverCallbacks();
},
removeObserver: function(element) { // element instead of observer fixes mem leaks
this.observers = this.observers.reject( function(o) { return o.element==element });
this._cacheObserverCallbacks();
},
removeObserver: function(element) { // element instead of observer fixes mem leaks
this.observers = this.observers.reject( function(o) { return o.element==element });
this._cacheObserverCallbacks();
},
notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'
if(this[eventName+'Count'] > 0)
this.observers.each( function(o) {
notify: function(eventName, draggable, event) { // 'onStart', 'onEnd', 'onDrag'
if(this[eventName+'Count'] > 0)
this.observers.each( function(o) {
_cacheObserverCallbacks: function() {
['onStart','onEnd','onDrag'].each( function(eventName) {
Draggables[eventName+'Count'] = Draggables.observers.select(
_cacheObserverCallbacks: function() {
['onStart','onEnd','onDrag'].each( function(eventName) {
Draggables[eventName+'Count'] = Draggables.observers.select(
},
endeffect: function(element) {
var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
},
endeffect: function(element) {
var toOpacity = Object.isNumber(element._opacity) ? element._opacity : 1.0;
- new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
+ new Effect.Opacity(element, {duration:0.2, from:0.7, to:toOpacity,
snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] }
delay: 0
};
snap: false, // false, or xy or [x,y] or function(x,y){ return [x,y] }
delay: 0
};
if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
Object.extend(defaults, {
starteffect: function(element) {
element._opacity = Element.getOpacity(element);
Draggable._dragging[element] = true;
if(!arguments[1] || Object.isUndefined(arguments[1].endeffect))
Object.extend(defaults, {
starteffect: function(element) {
element._opacity = Element.getOpacity(element);
Draggable._dragging[element] = true;
- new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
+ new Effect.Opacity(element, {duration:0.2, from:element._opacity, to:0.7});
var options = Object.extend(defaults, arguments[1] || { });
this.element = $(element);
var options = Object.extend(defaults, arguments[1] || { });
this.element = $(element);
if(options.handle && Object.isString(options.handle))
this.handle = this.element.down('.'+options.handle, 0);
if(options.handle && Object.isString(options.handle))
this.handle = this.element.down('.'+options.handle, 0);
if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
options.scroll = $(options.scroll);
this._isScrollChild = Element.childOf(this.element, options.scroll);
}
if(options.scroll && !options.scroll.scrollTo && !options.scroll.outerHTML) {
options.scroll = $(options.scroll);
this._isScrollChild = Element.childOf(this.element, options.scroll);
}
this.eventMouseDown = this.initDrag.bindAsEventListener(this);
Event.observe(this.handle, "mousedown", this.eventMouseDown);
this.eventMouseDown = this.initDrag.bindAsEventListener(this);
Event.observe(this.handle, "mousedown", this.eventMouseDown);
destroy: function() {
Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
Draggables.unregister(this);
},
destroy: function() {
Event.stopObserving(this.handle, "mousedown", this.eventMouseDown);
Draggables.unregister(this);
},
currentDelta: function() {
return([
parseInt(Element.getStyle(this.element,'left') || '0'),
parseInt(Element.getStyle(this.element,'top') || '0')]);
},
currentDelta: function() {
return([
parseInt(Element.getStyle(this.element,'left') || '0'),
parseInt(Element.getStyle(this.element,'top') || '0')]);
},
initDrag: function(event) {
if(!Object.isUndefined(Draggable._dragging[this.element]) &&
Draggable._dragging[this.element]) return;
initDrag: function(event) {
if(!Object.isUndefined(Draggable._dragging[this.element]) &&
Draggable._dragging[this.element]) return;
// abort on form elements, fixes a Firefox issue
var src = Event.element(event);
if((tag_name = src.tagName.toUpperCase()) && (
// abort on form elements, fixes a Firefox issue
var src = Event.element(event);
if((tag_name = src.tagName.toUpperCase()) && (
if(this.options.zindex) {
this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
this.element.style.zIndex = this.options.zindex;
}
if(this.options.zindex) {
this.originalZ = parseInt(Element.getStyle(this.element,'z-index') || 0);
this.element.style.zIndex = this.options.zindex;
}
- this.element._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
- if (!this.element._originallyAbsolute)
+ this._originallyAbsolute = (this.element.getStyle('position') == 'absolute');
+ if (!this._originallyAbsolute)
Position.absolutize(this.element);
this.element.parentNode.insertBefore(this._clone, this.element);
}
Position.absolutize(this.element);
this.element.parentNode.insertBefore(this._clone, this.element);
}
if(this.options.scroll) {
if (this.options.scroll == window) {
var where = this._getWindowScroll(this.options.scroll);
if(this.options.scroll) {
if (this.options.scroll == window) {
var where = this._getWindowScroll(this.options.scroll);
updateDrag: function(event, pointer) {
if(!this.dragging) this.startDrag(event);
updateDrag: function(event, pointer) {
if(!this.dragging) this.startDrag(event);
var p;
if (this.options.scroll == window) {
with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
var p;
if (this.options.scroll == window) {
with(this._getWindowScroll(this.options.scroll)) { p = [ left, top, left+width, top+height ]; }
if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
this.startScrolling(speed);
}
if(pointer[1] > (p[3]-this.options.scrollSensitivity)) speed[1] = pointer[1]-(p[3]-this.options.scrollSensitivity);
this.startScrolling(speed);
}
// fix AppleWebKit rendering
if(Prototype.Browser.WebKit) window.scrollBy(0,0);
// fix AppleWebKit rendering
if(Prototype.Browser.WebKit) window.scrollBy(0,0);
- var dropped = false;
- if(success) {
- dropped = Droppables.fire(event, this.element);
- if (!dropped) dropped = false;
+ var dropped = false;
+ if(success) {
+ dropped = Droppables.fire(event, this.element);
+ if (!dropped) dropped = false;
}
if(dropped && this.options.onDropped) this.options.onDropped(this.element);
Draggables.notify('onEnd', this, event);
var revert = this.options.revert;
if(revert && Object.isFunction(revert)) revert = revert(this.element);
}
if(dropped && this.options.onDropped) this.options.onDropped(this.element);
Draggables.notify('onEnd', this, event);
var revert = this.options.revert;
if(revert && Object.isFunction(revert)) revert = revert(this.element);
var d = this.currentDelta();
if(revert && this.options.reverteffect) {
if (dropped == 0 || revert != 'failure')
var d = this.currentDelta();
if(revert && this.options.reverteffect) {
if (dropped == 0 || revert != 'failure')
keyPress: function(event) {
if(event.keyCode!=Event.KEY_ESC) return;
this.finishDrag(event, false);
Event.stop(event);
},
keyPress: function(event) {
if(event.keyCode!=Event.KEY_ESC) return;
this.finishDrag(event, false);
Event.stop(event);
},
endDrag: function(event) {
if(!this.dragging) return;
this.stopScrolling();
this.finishDrag(event, true);
Event.stop(event);
},
endDrag: function(event) {
if(!this.dragging) return;
this.stopScrolling();
this.finishDrag(event, true);
Event.stop(event);
},
if(this.options.ghosting) {
var r = Position.realOffset(this.element);
pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
}
if(this.options.ghosting) {
var r = Position.realOffset(this.element);
pos[0] += r[0] - Position.deltaX; pos[1] += r[1] - Position.deltaY;
}
if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
}
if(this.options.scroll && (this.options.scroll != window && this._isScrollChild)) {
pos[0] -= this.options.scroll.scrollLeft-this.originalScrollLeft;
pos[1] -= this.options.scroll.scrollTop-this.originalScrollTop;
}
-
- var p = [0,1].map(function(i){
- return (point[i]-pos[i]-this.offset[i])
+
+ var p = [0,1].map(function(i){
+ return (point[i]-pos[i]-this.offset[i])
if(this.options.snap) {
if(Object.isFunction(this.options.snap)) {
p = this.options.snap(p[0],p[1],this);
} else {
if(Object.isArray(this.options.snap)) {
p = p.map( function(v, i) {
if(this.options.snap) {
if(Object.isFunction(this.options.snap)) {
p = this.options.snap(p[0],p[1],this);
} else {
if(Object.isArray(this.options.snap)) {
p = p.map( function(v, i) {
var style = this.element.style;
if((!this.options.constraint) || (this.options.constraint=='horizontal'))
style.left = p[0] + "px";
if((!this.options.constraint) || (this.options.constraint=='vertical'))
style.top = p[1] + "px";
var style = this.element.style;
if((!this.options.constraint) || (this.options.constraint=='horizontal'))
style.left = p[0] + "px";
if((!this.options.constraint) || (this.options.constraint=='vertical'))
style.top = p[1] + "px";
stopScrolling: function() {
if(this.scrollInterval) {
clearInterval(this.scrollInterval);
stopScrolling: function() {
if(this.scrollInterval) {
clearInterval(this.scrollInterval);
startScrolling: function(speed) {
if(!(speed[0] || speed[1])) return;
this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
this.lastScrolled = new Date();
this.scrollInterval = setInterval(this.scroll.bind(this), 10);
},
startScrolling: function(speed) {
if(!(speed[0] || speed[1])) return;
this.scrollSpeed = [speed[0]*this.options.scrollSpeed,speed[1]*this.options.scrollSpeed];
this.lastScrolled = new Date();
this.scrollInterval = setInterval(this.scroll.bind(this), 10);
},
this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
}
this.options.scroll.scrollLeft += this.scrollSpeed[0] * delta / 1000;
this.options.scroll.scrollTop += this.scrollSpeed[1] * delta / 1000;
}
Position.prepare();
Droppables.show(Draggables._lastPointer, this.element);
Draggables.notify('onDrag', this);
Position.prepare();
Droppables.show(Draggables._lastPointer, this.element);
Draggables.notify('onDrag', this);
}
}
return { top: T, left: L, width: W, height: H };
}
}
return { top: T, left: L, width: W, height: H };
if(s) {
Draggables.removeObserver(s.element);
s.droppables.each(function(d){ Droppables.remove(d) });
s.draggables.invoke('destroy');
if(s) {
Draggables.removeObserver(s.element);
s.droppables.each(function(d){ Droppables.remove(d) });
s.draggables.invoke('destroy');
onChange: Prototype.emptyFunction,
onUpdate: Prototype.emptyFunction
}, arguments[1] || { });
onChange: Prototype.emptyFunction,
onUpdate: Prototype.emptyFunction
}, arguments[1] || { });
var options_for_droppable = {
overlap: options.overlap,
containment: options.containment,
tree: options.tree,
hoverclass: options.hoverclass,
onHover: Sortable.onHover
var options_for_droppable = {
overlap: options.overlap,
containment: options.containment,
tree: options.tree,
hoverclass: options.hoverclass,
onHover: Sortable.onHover
var options_for_tree = {
onHover: Sortable.onEmptyHover,
overlap: options.overlap,
containment: options.containment,
hoverclass: options.hoverclass
var options_for_tree = {
onHover: Sortable.onEmptyHover,
overlap: options.overlap,
containment: options.containment,
hoverclass: options.hoverclass
(options.elements || this.findElements(element, options) || []).each( function(e,i) {
var handle = options.handles ? $(options.handles[i]) :
(options.elements || this.findElements(element, options) || []).each( function(e,i) {
var handle = options.handles ? $(options.handles[i]) :
options.draggables.push(
new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
Droppables.add(e, options_for_droppable);
if(options.tree) e.treeNode = element;
options.draggables.push(
new Draggable(e, Object.extend(options_for_draggable, { handle: handle })));
Droppables.add(e, options_for_droppable);
if(options.tree) e.treeNode = element;
if(options.tree) {
(Sortable.findTreeElements(element, options) || []).each( function(e) {
Droppables.add(e, options_for_tree);
if(options.tree) {
(Sortable.findTreeElements(element, options) || []).each( function(e) {
Droppables.add(e, options_for_tree);
return Element.findChildren(
element, options.only, options.tree ? true : false, options.tag);
},
return Element.findChildren(
element, options.only, options.tree ? true : false, options.tag);
},
findTreeElements: function(element, options) {
return Element.findChildren(
element, options.only, options.tree ? true : false, options.treeTag);
findTreeElements: function(element, options) {
return Element.findChildren(
element, options.only, options.tree ? true : false, options.treeTag);
var oldParentNode = element.parentNode;
element.style.visibility = "hidden"; // fix gecko rendering
dropon.parentNode.insertBefore(element, dropon);
var oldParentNode = element.parentNode;
element.style.visibility = "hidden"; // fix gecko rendering
dropon.parentNode.insertBefore(element, dropon);
Sortable.options(oldParentNode).onChange(element);
Sortable.options(dropon.parentNode).onChange(element);
}
Sortable.options(oldParentNode).onChange(element);
Sortable.options(dropon.parentNode).onChange(element);
}
var oldParentNode = element.parentNode;
element.style.visibility = "hidden"; // fix gecko rendering
dropon.parentNode.insertBefore(element, nextElement);
var oldParentNode = element.parentNode;
element.style.visibility = "hidden"; // fix gecko rendering
dropon.parentNode.insertBefore(element, nextElement);
Sortable.options(oldParentNode).onChange(element);
Sortable.options(dropon.parentNode).onChange(element);
}
}
},
Sortable.options(oldParentNode).onChange(element);
Sortable.options(dropon.parentNode).onChange(element);
}
}
},
onEmptyHover: function(element, dropon, overlap) {
var oldParentNode = element.parentNode;
var droponOptions = Sortable.options(dropon);
onEmptyHover: function(element, dropon, overlap) {
var oldParentNode = element.parentNode;
var droponOptions = Sortable.options(dropon);
for (index = 0; index < children.length; index += 1) {
if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
offset -= Element.offsetSize (children[index], droponOptions.overlap);
for (index = 0; index < children.length; index += 1) {
if (offset - Element.offsetSize (children[index], droponOptions.overlap) >= 0) {
offset -= Element.offsetSize (children[index], droponOptions.overlap);
mark: function(dropon, position) {
// mark on ghosting only
var sortable = Sortable.options(dropon.parentNode);
mark: function(dropon, position) {
// mark on ghosting only
var sortable = Sortable.options(dropon.parentNode);
($('dropmarker') || Element.extend(document.createElement('DIV'))).
hide().addClassName('dropmarker').setStyle({position:'absolute'});
document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
($('dropmarker') || Element.extend(document.createElement('DIV'))).
hide().addClassName('dropmarker').setStyle({position:'absolute'});
document.getElementsByTagName("body").item(0).appendChild(Sortable._marker);
Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
else
Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
Sortable._marker.setStyle({left: (offsets[0]+dropon.clientWidth) + 'px'});
else
Sortable._marker.setStyle({top: (offsets[1]+dropon.clientHeight) + 'px'});
_tree: function(element, options, parent) {
var children = Sortable.findElements(element, options) || [];
_tree: function(element, options, parent) {
var children = Sortable.findElements(element, options) || [];
children: [],
position: parent.children.length,
container: $(children[i]).down(options.treeTag)
children: [],
position: parent.children.length,
container: $(children[i]).down(options.treeTag)
sequence: function(element) {
element = $(element);
var options = Object.extend(this.options(element), arguments[1] || { });
sequence: function(element) {
element = $(element);
var options = Object.extend(this.options(element), arguments[1] || { });
return $(this.findElements(element, options) || []).map( function(item) {
return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
});
return $(this.findElements(element, options) || []).map( function(item) {
return item.id.match(options.format) ? item.id.match(options.format)[1] : '';
});
setSequence: function(element, new_sequence) {
element = $(element);
var options = Object.extend(this.options(element), arguments[2] || { });
setSequence: function(element, new_sequence) {
element = $(element);
var options = Object.extend(this.options(element), arguments[2] || { });
var nodeMap = { };
this.findElements(element, options).each( function(n) {
if (n.id.match(options.format))
nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
n.parentNode.removeChild(n);
});
var nodeMap = { };
this.findElements(element, options).each( function(n) {
if (n.id.match(options.format))
nodeMap[n.id.match(options.format)[1]] = [n, n.parentNode];
n.parentNode.removeChild(n);
});
serialize: function(element) {
element = $(element);
var options = Object.extend(Sortable.options(element), arguments[1] || { });
var name = encodeURIComponent(
(arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
serialize: function(element) {
element = $(element);
var options = Object.extend(Sortable.options(element), arguments[1] || { });
var name = encodeURIComponent(
(arguments[1] && arguments[1].name) ? arguments[1].name : element.id);
// Returns true if child is contained within element
Element.isParent = function(child, element) {
if (!child.parentNode || child == element) return false;
if (child.parentNode == element) return true;
return Element.isParent(child.parentNode, element);
// Returns true if child is contained within element
Element.isParent = function(child, element) {
if (!child.parentNode || child == element) return false;
if (child.parentNode == element) return true;
return Element.isParent(child.parentNode, element);
-Element.findChildren = function(element, only, recursive, tagName) {
+Element.findChildren = function(element, only, recursive, tagName) {
if(!element.hasChildNodes()) return null;
tagName = tagName.toUpperCase();
if(only) only = [only].flatten();
if(!element.hasChildNodes()) return null;
tagName = tagName.toUpperCase();
if(only) only = [only].flatten();
Element.offsetSize = function (element, type) {
return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];
Element.offsetSize = function (element, type) {
return element['offset' + ((type=='vertical' || type=='height') ? 'Height' : 'Width')];