function validate(form) {

var submitform = true;
var errortext = "";

if (form.name.value == '') {
submitform = false;
errortext += "Please fill in your name.\n";
}

if (form.email.value == '') {
submitform = false;
errortext += "Please fill in your email address.\n";
} else if (!form.email.value.match(/^[A-Za-z0-9_-]+([.][A-Za-z0-9_-]+){0,4}[@][A-Za-z0-9_-]+([.][A-Za-z0-9_-]+){1,3}$/)) {
submitform = false;
errortext += "Please fill in a valid email address. \n";
}


if (submitform == false) {
alert(errortext);
return false;
}

}