Sure, inside the .js file, try commenting out the below code:
Code:
/*
if (submenubottomedge-scrollY>ddlevelsmenu.docheight){ //no room downwards?
if (this._dimensions.submenuh<this._offsets.top+(dir=="sidebar"? this._dimensions.h : 0)-scrollY){ //move up?
menutop+= - this._dimensions.submenuh + (this._istoplevel && dir=="topbar"? -this._dimensions.h : this._dimensions.h)
}
else{ //top of window edge
menutop+= -(this._offsets.top-scrollY) + (this._istoplevel && dir=="topbar"? -this._dimensions.h : 0)
}
}
*/
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