Rileggere file xml ogni tot minuti...

[giovanni12881]

salve ho trovato qst script

//------------------------------------------------------------------------- 
// XML 
//-------------------------------------------------------------------------
 var xmlLoader:URLLoader = new URLLoader(); 
var xmlRequest:URLRequest = new URLRequest("news.xml");
  xmlLoader.addEventListener(Event.COMPLETE, Load_XML); 
xmlLoader.load(xmlRequest);  
var news_title:Array = new Array();
 var news_description:Array = new Array(); 
var text_to_scroll = "";
 var i:int; 
var num = 0; 
/* var title_tag_op:String = "<font color='#66CC00'>"; var title_tag_cl:String = "</font>"; */ function Load_XML(e:Event) {    
 var xml:XML = new XML(e.target.data); 
// ..   
  for each (var item_1:String in (xml.title.*) ) {       
  news_title.push(item_1);     }
 // ..     
for each (var item_2:String in (xml.description.*) ) {         
news_description.push(item_2); 
    } 
// ..     
for (i = 0; i <= (news_title.length-1); i++) {         
 text_to_scroll += "[b]" + news_title[i] + "[/b]" + " " + news_description[i] + " ";    
 } 
// ..    
 load_news(); 
// .. 
}   
function load_news():void{     
     //SCROLLING SPEED     
var scrolling_speed:int = 5;         
 //establish the field    
 var my_text:TextField = new TextField();          
//add the field to stage   
  addChild(my_text);     
setChildIndex(my_text,1);     
setChildIndex(sf_ora,2);     
setChildIndex(oramin,3);    
 //set the text     
my_text.htmlText = text_to_scroll;         
 //set the x coord off right side of stage    
 my_text.x = stage.stageWidth;         
 //set y coord in middle of stage (about)    
 //my_text.y = (stage.stageHeight/2)-(my_text.height/2);   
  my_text.y = 520;        
  //not selectable     
my_text.selectable = false;      
    //no border    
 my_text.border = false;   
       //field scales with more text       
  my_text.autoSize = TextFieldAutoSize.LEFT;     
     //set a format    
 var my_text_format:TextFormat = new TextFormat();        
  my_text_format.font = "Arial";      
    my_text_format.color = 0x000000;   
   my_text_format.size = 40;          
//apply formatting     
my_text.setTextFormat(my_text_format);      
    //add the listener to scroll         my_text.addEventListener(Event.ENTER_FRAME,move_text);     
     //scroll function   
  function move_text(myevent:Event):void {    
     my_text.x-=scrolling_speed;       
  if(my_text.x<(0-my_text.width)){          
   my_text.x=stage.stageWidth;             
num++;                      }  
   } 
} 

come posso modificare qst script in modo che ricarichi il file ogni 5 minuti
grazie