function validate() {
	
	var name = document.getElementById("name");
	var email = document.getElementById("emailaddress");
	var phone = document.getElementById("telephone");
	var captcha = document.getElementById("captcha");
	
	if (name.value.length < 2) {
		alert('Please enter your name.');
		name.focus();
		return false;
	}
	
	if (email.value.indexOf("@") == -1 || email.value.indexOf(".") == -1 || email.value.length < 5) {
		alert('Pelase enter valid email address.');
		email.focus();
		return false;
	}
	
	if (phone.value.length < 6) {
		alert('Please enter your telephone number.');
		phone.focus();
		return false;
	}
	
	if (captcha.value.length < 3) {
		alert('Please enter valid security code.');
		captcha.focus();
		return false;
	}
	
	return true;
	
}