function validate(form) {

var submitform = true;
var errortext = "The following errors were encountered:\n\n";

if (form.name.value == '') {
submitform = false;
errortext += "Name is a mandatory field\n";
}

if (form.company.value == '') {
submitform = false;
errortext += "Company is a mandatory field\n";
}

if (form.email.value == '') {
submitform = false;
errortext += "Email Address is a mandatory field\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 enter a valid email address\n";
}

if (form.phone.value == '') {
submitform = false;
errortext += "Phone is a mandatory field\n";
}

if (form.message.value == '') {
submitform = false;
errortext += "Message is a mandatory field\n";
}

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

}