#powerTip{background-color:rgba(0,0,0,0.8);border-radius:6px;color:#FFF;cursor:default;display:none;padding:10px;position:absolute;white-space:nowrap;z-index:2}
#powerTip.n:before,#powerTip.e:before,#powerTip.s:before,#powerTip.w:before,#powerTip.ne:before,#powerTip.nw:before,#powerTip.se:before,#powerTip.sw:before{content:"";position:absolute}
#powerTip.n:before,#powerTip.s:before{border-left:5px solid transparent;border-right:5px solid transparent;left:50%;margin-left:-5px}
#powerTip.e:before,#powerTip.w:before{border-bottom:5px solid transparent;border-top:5px solid transparent;margin-top:-5px;top:50%}
#powerTip.e:before{border-right:10px solid rgba(0,0,0,0.8);left:-10px}
#powerTip.w:before{border-left:10px solid rgba(0,0,0,0.8);right:-10px}
#powerTip.ne:before,#powerTip.se:before{border-left:0;border-right:10px solid transparent;left:10px}
#powerTip.nw:before,#powerTip.sw:before{border-left:10px solid transparent;border-right:0;right:10px}
#powerTip.n:before,#powerTip.ne:before,#powerTip.nw:before{border-top:10px solid rgba(0,0,0,0.8);bottom:-10px}
#powerTip.s:before,#powerTip.se:before,#powerTip.sw:before{border-bottom:10px solid rgba(0,0,0,0.8);top:-10px}