function ajaxFunction(arquivo,funcao,campoDiv,complemento){
	var ajaxRequest;
	var arquivo;
	var funcao;
	var campoDiv;
	var complemento;
	
	document.getElementById(campoDiv).innerHTML='<center><img src="interface/imagens/default/ajax-loader_big.gif" border="0" vspace="30"></center>';
	
	try{
		// Opera 8.0+, Firefox, Safari
		ajaxRequest = new XMLHttpRequest();
	} catch (e){
		// Internet Explorer Browsers
		try{
			ajaxRequest = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try{
				ajaxRequest = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e){
				// Something went wrong
				alert("Erro com seu browser!");
				return false;
			}
		}
	}
	// Create a function that will receive data sent from the server
	ajaxRequest.onreadystatechange = function(){
		if(ajaxRequest.readyState == 4){
			document.getElementById(campoDiv).innerHTML=ajaxRequest.responseText;
		}
	}

	var queryString = "in=" + funcao + complemento;
	ajaxRequest.open("GET", arquivo + "?" + queryString, true);
	ajaxRequest.send(null); 
}