/*  Prototype JavaScript framework, version 1.7
 *  (c) 2005-2010 Sam Stephenson
 *
 *  Prototype is freely distributable under the terms of an MIT-style license.
 *  For details, see the Prototype web site: http://www.prototypejs.org/
 *
 *--------------------------------------------------------------------------*/
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b=Prototype.BrowserFeatures,c=Element.Methods.ByTag;a||(Object.extend(Form,Form.Methods),Object.extend(Form.Element,Form.Element.Methods),Object.extend(Element.Methods.ByTag,{FORM:Object.clone(Form.Methods),INPUT:Object.clone(Form.Element.Methods),SELECT:Object.clone(Form.Element.Methods),TEXTAREA:Object.clone(Form.Element.Methods),BUTTON:Object.clone(Form.Element.Methods)}));if(arguments.length==2){var d=a;a=arguments[1]}d?Object.isArray(d)?d.each(e):e(d):Object.extend(Element.Methods,a||{});var h=window.HTMLElement?HTMLElement.prototype:Element.prototype;b.ElementExtensions&&(f(Element.Methods,h),f(Element.Methods.Simulated,h,!0));if(b.SpecificElementExtensions)for(var i in Element.Methods.ByTag){var j=g(i);if(Object.isUndefined(j))continue;f(c[i],j.prototype)}Object.extend(Element,Element.Methods),delete 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this._preComputing||this._end(),b},"border-box-width":function(a){this._preComputing||this._begin();var b=a.offsetWidth;return this._preComputing||this._end(),b},"margin-box-height":function(a){var b=this.get("border-box-height"),c=this.get("margin-top"),d=this.get("margin-bottom");return b<=0?0:b+c+d},"margin-box-width":function(a){var b=this.get("border-box-width"),c=this.get("margin-left"),d=this.get("margin-right");return b<=0?0:b+c+d},top:function(a){var b=a.positionedOffset();return b.top},bottom:function(a){var b=a.positionedOffset(),c=a.getOffsetParent(),d=c.measure("height"),e=this.get("border-box-height");return d-e-b.top},left:function(a){var b=a.positionedOffset();return b.left},right:function(a){var b=a.positionedOffset(),c=a.getOffsetParent(),d=c.measure("width"),e=this.get("border-box-width");return d-e-b.left},"padding-top":function(a){return b(a,"paddingTop")},"padding-bottom":function(a){return b(a,"paddingBottom")},"padding-left":function(a){return 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