cb[which].apply(scope, [arg, user_data]); 
cb[which].apply(cb.scope, [arg, user_data]); 
	this._doCallback = function(cb, which, arg) {		//document.getElementById('log').innerHTML += "_doCallback ... <br>";		var user_data = "argument" in cb ? cb.argument : null;		if (which in cb) {			if (cb.scope) {				cb[which].apply(scope, [arg, user_data]);			} else { 				cb[which](arg, user_data); 			}		}	}
125	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/125/c375d95caa83f0bf12d2d0f9c11160b982951ec9/sparql.js/buggy/webapp/snorql/sparql.js