function fb(supplied,label,level){if(typeof console!="undefined"){var message=supplied;if(label!=undefined&&label!=""){message=label+": "+message}if(level!=undefined&&level!=""){switch(level.toLowerCase()){case"info":console.info(message);break;case"warn":console.warn(message);break;case"error":console.error(message);break;default:console.log(message);break}}else{console.log(message)}}}function assert(expr,message){if(!expr){fb(message,"Assertion Error","warn")}}