function tweet(u) {
	this.site_url = u;
	
	var xfgd  = 'dptech';
	var fdsr = 'R_177605f2d67ccefc74692813416dae0b';
	
	api = 'http://api.bit.ly/shorten' + '?version=2.0.1' + '&format=json' + '&callback=Callback' + '&login=' + xfgd + '&apiKey=' + fdsr + '&longUrl=';
	var script = document.createElement('script');
	script.type = 'text/javascript';
	script.src = api + encodeURIComponent(site_url);
	document.body.appendChild(script);
}

function Callback(json) {
	var _url = 'http://twitter.com/home/?status=' + encodeURIComponent(json.results[site_url]['shortUrl']);
	window.open(_url, '_blank'); 
	//location.href = _url;
}