function verificarEmail(varEmail,varForm,varDir) {
	if (varEmail != "" && varEmail.length >= 10 && varEmail.indexOf("@") > 0) {
		var xmlHttp = null;
		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("Seu navegador não suporta AJAX. Atualize-o em www.getfirefox.com");
				}
			}
		}
	
	  xmlHttp.onreadystatechange=function() {
			if(xmlHttp.readyState == 4) {
				retorno = xmlHttp.responseXML;
				email = retorno.getElementsByTagName('email');
				document.forms[varForm].elements["frmCheckEmail"].value = email[0].getElementsByTagName('existe')[0].firstChild.nodeValue;
			}
	  }
	  xmlHttp.open("GET",varHTTP+"www.memee.com.br/ajx_verificaemail.asp?email="+varEmail,true);
	  xmlHttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
	  xmlHttp.send(null);
	}
}