if(Object.isUndefined(Irbt)){
    var Irbt = {}
}

Irbt.imagesTip = Class.create(Df.Tip,{
        resizeHolderWithoutPointer: function(){
                this.holder.style.height = this.tipHeight + 'px';
                this.holder.style.width = this.tipWidth + 'px';
                this.tip.style.top = '0px';
                this.tip.style.left = '0px';
                this.pointer.style.display = 'none';
                this.holder.select("div.ttFooter")[0].className ='ttFooterNoPointer';
        }
})

Irbt.scrollableTip = Class.create(Irbt.imagesTip, {
        setPos: function(){
                this.elePosLeft = this.element.cumulativeOffset().left - $('scrollbar1').scrollLeft
                this.elePosTop = this.element.cumulativeOffset().top
                this.maxWidth = parseInt(Element.getDimensions(document.body).width)
                this.offSetTop = parseInt(Position.realOffset(this.holder)[1])
                this.offsetLeft = parseInt(Position.realOffset(this.holder)[0])
        }
})