/*!
 * Ext JS Library 3.0.0
 * Copyright(c) 2006-2009 Ext JS, LLC
 * licensing@extjs.com
 * http://www.extjs.com/license
 */
/**
 * @class Ext.Element
 */
Ext.Element.addMethods({
    /**
     * Returns true if this element is scrollable.
     * @return {Boolean}
     */
    isScrollable : function(){
        var dom = this.dom;
        return dom.scrollHeight > dom.clientHeight || dom.scrollWidth > dom.clientWidth;
    },

    /**
     * Scrolls this element the specified scroll point. It does NOT do bounds checking so if you scroll to a weird value it will try to do it. For auto bounds checking, use scroll().
     * @param {String} side Either "left" for scrollLeft values or "top" for scrollTop values.
     * @param {Number} value The new scroll value.
     * @return {Element} this
     */
    scrollTo : function(side, value){
        this.dom["scroll" + (/top/i.test(side) ? "Top" : "Left")] = value;
        return this;
    },

    /**
     * Returns the current scroll position of the element.
     * @return {Object} An object containing the scroll position in the format {left: (scrollLeft), top: (scrollTop)}
     */
    getScroll : function(){
        var d = this.dom, 
            doc = document,
            body = doc.body,
            docElement = doc.documentElement,
            l,
            t,
            ret;

        if(d == doc || d == body){
            if(Ext.isIE && Ext.isStrict){
                l = docElement.scrollLeft; 
                t = docElement.scrollTop;
            }else{
                l = window.pageXOffset;
                t = window.pageYOffset;
            }
            ret = {left: l || (body ? body.scrollLeft : 0), top: t || (body ? body.scrollTop : 0)};
        }else{
            ret = {left: d.scrollLeft, top: d.scrollTop};
        }
        return ret;
    }
});