add: if (height < 0) height = 0; 
context:     setHeight: function(height) {        if (this._box == null || this._borderSize < 0 || height < 0) return;        height -= this._borderSizeSub;        this._box.style.height = height + "px";        height *= this._pctHeight;        this._clipTop = Math.floor(height * this._pctTop);        height = Math.floor(height);        this._clipBottom = height - this._clipTop;        var cs = this._c.style, ls = this._l.style, rs = this._r.style;        cs.top = ls.top = rs.top = -(this._clipTop - this._borderSize) + "px";        cs.height = ls.height = rs.height = height + "px";        ls.clip = "rect(" + this._clipTop + "px " + this._borderSize + "px " + this._clipBottom + "px auto)";        rs.clip = "rect(" + this._clipTop + "px auto " + this._clipBottom + "px " + (this._imgWidth - this._borderSize) + "px)";        cs.clip = "rect(" + this._clipTop + "px " + this._clipRight + "px " + this._clipBottom + "px " + this._clipLeft + "px)";    },
meta: 5515	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5515/a18926e6e7d4847cbee094f93eafe313d0090941/BorderImage.js/buggy/src/thinwire/render/web/resources/BorderImage.js