function ajaxFunction(metodo, arquivo, divElem){
document.getElementById(divElem).innerHTML="";
var xmlHttp;
try{  // Firefox, Opera 8.0+, Safari  
	xmlHttp=new XMLHttpRequest();  
}
catch (e){  // Internet Explorer  
	try{
		xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");    
	}
	catch (e){
		try{
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
		catch (e){
			alert("Your browser does not support AJAX!");
			return false;      
			}    
		}
	}
	xmlHttp.onreadystatechange=function(){
		if(xmlHttp.readyState==4){
//		document.myForm.time.value=xmlHttp.responseText;
		document.getElementById(divElem).innerHTML=xmlHttp.responseText;
		}
	}
	xmlHttp.open(metodo, arquivo, true);
	xmlHttp.send(null);  
}