add: if (jsMath.loaded) {this.afterLoad(); return} 
context:   LoadJsMath: function () {    if (this.root) {      this.setMessage('Loading jsMath...');      this.Script.AfterLoad = this.afterLoad;      this.Script.Load('jsMath.js');    } else {      alert("Can't determine URL for jsMath.js");    }  },
meta: 7708	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/7708/a2c0d5a356a8b10d6d61ebbc51a294c48afc4be4/autoload.js/buggy/htdocs/jsMath/plugins/autoload.js