Store the current overflow setting and clip overflow on the element - use {@link #unclip} to remove
@return {Ext.dom.Element} this
function() {
        var me = this,
            data = (me.$cache || me.getCache()).data,
            style;

        if (!data[ISCLIPPED]) {
            data[ISCLIPPED] = true;
            style = me.getStyle([OVERFLOW, OVERFLOWX, OVERFLOWY]);
            data[ORIGINALCLIP] = {
                o: style[OVERFLOW],
                x: style[OVERFLOWX],
                y: style[OVERFLOWY]
            };
            me.setStyle(OVERFLOW, HIDDEN);
            me.setStyle(OVERFLOWX, HIDDEN);
            me.setStyle(OVERFLOWY, HIDDEN);
        }
        return me;
    }