function ajax(url, acao){
	req = null;
	if (window.XMLHttpRequest) {
		req = new XMLHttpRequest();
		req.onreadystatechange = eval(acao);
		req.open("GET",url,true);
		req.send(null);
	}else if (window.ActiveXObject) {
		req = new ActiveXObject("Microsoft.XMLHTTP");
		if (req) {
			req.onreadystatechange = eval(acao);
			req.open("GET",url,true);
			req.send();
		}
	}
}

function useAjax(pagina, funcao, parametros){
	if(pagina && funcao){
		var	url	=	pagina+".php?"+parametros;
		var funcaoRecebida	=	"stateChanged_"+funcao;
		ajax(url, funcaoRecebida);
	}else return false;
}
function get(id){
	return document.getElementById(id);
}
function stateChanged_webdoorHP(){
	if (req.readyState == 4){
		eval(req.responseText);
	}
}
function stateChanged_ExcluirMidiaVinculada(){
	if (req.readyState == 4){
		eval(req.responseText);
	}
}
function stateChanged_ExcluirFoto_GaleriaFotos(){
	if (req.readyState == 4){
		eval(req.responseText);
	}
}
function stateChanged_AbreGaleriaMidias(){
	if (req.readyState == 4){
		eval(req.responseText);
	}
}
function stateChanged_AbreGaleriaAjax(){
	if (req.readyState == 4){
		eval(req.responseText);
	}
}