rem: this.em = jsMath.Img.w[this.fonts[this.best]] 
add: this.em = jsMath.Img.w[this.fonts[this.best]]; 
context:   Scale: function () {    if (!this.loaded) return;    this.best = this.BestSize();    this.em = jsMath.Img.w[this.fonts[this.best]]        this.scale = (jsMath.em/this.em);    if (Math.abs(this.scale - 1) < .12) {this.scale = 1}  },
meta: 7708	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7708/61c84b8e3259ac66fefb3a3481afa4d8cea8faa0/jsMath.js/buggy/htdocs/jsMath/jsMath.js