function validate_name() {
	var_name = document.getElementById('name').value;
	if (var_name == '' || var_name == ' ') { 
		document.getElementById('alert_name').innerHTML = 'Enter your name.';
		return false;
	} 
document.getElementById('alert_name').innerHTML = '';
return true;
}

function validate_companyname() {
	var_companyname = document.getElementById('companyname').value;
	if (var_companyname == '' || var_companyname == ' ') { 
		document.getElementById('alert_companyname').innerHTML = 'Enter your company name.';
		return false;
	} 
document.getElementById('alert_companyname').innerHTML = '';
return true;
}

function validate_email() {
	var_email = document.getElementById('email').value;
	email_filter = /^[a-zA-Z0-9._%+-]+@(?:[a-zA-Z0-9-]+\.)+[a-zA-Z]{2,4}$/;
	if (!email_filter.test(var_email) || (var_email == '')) {
		document.getElementById('alert_email').innerHTML = 'Enter your email address.';
		return false;
	}
document.getElementById('alert_email').innerHTML = '';
return true;
}

function validate_phone() {
	var_phone = document.getElementById('phone').value;
	var_phone = var_phone.replace( /\D/g, '' );
	tel_filter = /^[0-9]{10,20}$/;
	if (!tel_filter.test(var_phone) || (var_phone == '')) {
		document.getElementById('alert_phone').innerHTML = 'Enter your phone/mobile number.';
		return false;
	}
document.getElementById('alert_phone').innerHTML = '';
return true;
}

function validate_subject() {
	var_subject = document.getElementById('subject').value;
	if (var_subject == '' || var_subject == ' ') {
		document.getElementById('alert_subject').innerHTML = 'Enter a subject.';
		return false;
	}
document.getElementById('alert_subject').innerHTML = '';
return true;
}

function validate_message() {
	var_message = document.getElementById('message').value;
	if (var_message == '' || var_message == ' ') {
		document.getElementById('alert_message').innerHTML = 'Enter your message.';
		return false;
	}
document.getElementById('alert_message').innerHTML = '';
return true;
}