function SendForm() {
if (document.forms[0].msg1.value == "") {
alert("Please, type your name");
document.forms[0].msg1.focus();
return false
}
if (document.forms[0].msg2.value == "") {
alert("Please, type your e-mail");
document.forms[0].msg2.focus();
return false
}
if (document.forms[0].msg2.value == "") {
alert("Incorrect e-mail address. Please, try again.");
document.forms[0].msg2.focus();
return false
}
if (document.forms[0].msg2.indexOf("@") == "-1") {
alert("Incorrect e-mail address. Please, try again.");
document.forms[0].msg2.focus();
return false
}
if (document.forms[0].msg4.value == "") {
alert("The text field is empty. Please, write a message.");
document.forms[0].msg4.focus();
return false
}
return true;
}