function checkForm() {
name = document.getElementById("name").value;
email = document.getElementById("mailfrom").value;
message = document.getElementById("message").value;
if (name == "" && email == "" && message == "") {
hideAllErrors();
document.getElementById("nameError").style.display = "inline";
document.getElementById("name").select();
document.getElementById("name").focus();
document.getElementById("mailfromError").style.display = "inline";
document.getElementById("mailfrom").select();
document.getElementById("name").focus();
document.getElementById("messageError").style.display = "inline";
document.getElementById("message").select();
document.getElementById("name").focus();
return false;
} else if (email == "" && message == "") {
hideAllErrors();
document.getElementById("mailfromError").style.display = "inline";
document.getElementById("mailfrom").select();
document.getElementById("mailfrom").focus();
document.getElementById("messageError").style.display = "inline";
document.getElementById("message").select();
document.getElementById("mailfrom").focus();
return false;
} else if (name == "" && message == "") {
hideAllErrors();
document.getElementById("nameError").style.display = "inline";
document.getElementById("name").select();
document.getElementById("name").focus();
document.getElementById("messageError").style.display = "inline";
document.getElementById("message").select();
document.getElementById("name").focus();
return false;
} else if (name == "" && email == "") {
hideAllErrors();
document.getElementById("nameError").style.display = "inline";
document.getElementById("name").select();
document.getElementById("name").focus();
document.getElementById("mailfromError").style.display = "inline";
document.getElementById("mailfrom").select();
document.getElementById("name").focus();
return false;
} else if (name == "") {
hideAllErrors();
document.getElementById("nameError").style.display = "inline";
document.getElementById("name").select();
document.getElementById("name").focus();
return false;
} else if (email == "") {
hideAllErrors();
document.getElementById("mailfromError").style.display = "inline";
document.getElementById("mailfrom").select();
document.getElementById("mailfrom").focus();
return false;
} else if (message == "") {
hideAllErrors();
document.getElementById("messageError").style.display = "inline";
document.getElementById("message").select();
document.getElementById("message").focus();
return false;
} else if (email.indexOf("@") ===-1 || email.indexOf(".") ===-1) {
hideAllErrors();
document.getElementById("mailfromError2").style.display = "inline";
document.getElementById("mailfrom").select();
document.getElementById("mailfrom").focus();
return false;
} else return true;
}
function hideAllErrors() {
document.getElementById("nameError").style.display = "none"
document.getElementById("mailfromError").style.display = "none"
document.getElementById("messageError").style.display = "none"
}