//Why t == null ?
import System.IO;
var t : String;
function Start(){
Get( t );
Debug.Log( t );
}
function Get ( txt : String ) {
var url : String = "http://www.redsky.org.cn/00test/works/001.txt" ;
var www:WWW = new WWW(url);
yield www;
txt = www.text;
Debug.Log( txt );
}