function formCheck(formobj){
var fieldRequired = Array("nome", "emailde", "assunto", "mensagem");
var fieldDescription = Array("Nome", "Email", "Assunto", "Mensagem");
var alertMsg = "Por favor, preencha os seguintes campos:\n";
var l_Msg = alertMsg.length;
for (var i = 0; i < fieldRequired.length; i++){
var obj = formobj.elements[fieldRequired[i]];
if (obj){	switch(obj.type){	case "select-one":	if (obj.selectedIndex == -1 || obj.options[obj.selectedIndex].text == ""){
alertMsg += " - " + fieldDescription[i] + "\n";
}	break;	case "select-multiple":	if (obj.selectedIndex == -1){
alertMsg += " - " + fieldDescription[i] + "\n";
}	break;	case "text":	case "textarea":
if (obj.value == "" || obj.value == null){
alertMsg += " - " + fieldDescription[i] + "\n";
}	break;	default:	}		if (obj.type == undefined){
var blnchecked = false;
for (var j = 0; j < obj.length; j++){
if (obj[j].checked){
blnchecked = true;		}		}		if (!blnchecked){
alertMsg += " - " + fieldDescription[i] + "\n";
}	}	}	}	if (alertMsg.length == l_Msg){	return true;
}else{		alert(alertMsg);	return false;		}		}
// -->