if (typeof console == 'undefined') {
// Try to be compatible with other browsers
// Only use firebug logging when available
console = new Object;
console.trace = function() {};
console.log = function() {};
console.debug = function() {};
console.info = function() {};
console.warn = function() {};
console.error = function() {};
console.time = function() {};
console.timeEnd = function() {};
console.count = function() {};
}

Inspired by some great extensions, this is fast becoming the swiss army knife Leathermans of web developer extensions for firefox!!