function ajax(destino, alvo, boolean){
  	var tela = new sack();
  	
  //	alert('boolean= '+boolean);
  //	tela.setVar('boolean',boolean);
	
	tela.requestFile = destino;	// Specifying which file to get
	var obj = document.getElementById(alvo);
	obj.innerHTML = "<div id='loading'><img src='./imagens/throbber.gif' style='vertical-align:middle;'/>Carregando...</div>";
	roundCorner('loading','white');
	tela.onCompletion = function(){
		var obj = document.getElementById(alvo);
		obj.innerHTML = tela.response;	
		if(boolean=="true"){
			execJS(obj);
		}
		else
		{
			execJS(obj);
			roundCorner(alvo,'white');
		}
	
	 };	
	tela.runAJAX();		// Execute AJAX function	
}


var bSaf = (navigator.userAgent.indexOf('Safari') != -1);
var bOpera = (navigator.userAgent.indexOf('Opera') != -1);
var bMoz = (navigator.appName == 'Netscape');
function execJS(node) {
  var st = node.getElementsByTagName('SCRIPT');
  var strExec;
  for(var i=0;i<st.length; i++) {     
    if (bSaf) {
      strExec = st[i].innerHTML;
    }
    else if (bOpera) {
      strExec = st[i].text;
    }
    else if (bMoz) {
      strExec = st[i].textContent;
    }
    else {
      strExec = st[i].text;
    }
    try {
      eval(strExec.split("<!--").join("").split("-->").join(""));
    } catch(e) {
      alert(e);
    }
  }
}