// JavaScript Document
/* Contact Us Form ------------------ */

function validate(contactForm) {

	if (contactForm.name.value == '') {
		alert("Please enter your full name");
		contactForm.name.focus();
		return false;
	}
	
	if (contactForm.email.value == '') {
		alert("Please enter your email address");
		contactForm.email.focus();
		return false;
	}
	
	if (!validEmail(contactForm.email.value)) {
		alert("Please enter a valid email address");
		contactForm.email.focus();
		return false;
	}
	
	if (contactForm.message.value == '') {
		alert("Please enter your message");
		contactForm.message.focus();
		return false;
	}
	

	return true;

}


// checks for valid telephone characters

function validNum(telno) {

	var pattern = "0123456789+-)(. ";
	var i = 0;

	do {
		var pos = 0;
		for ( var j = 0 ; j < pattern.length ; j++ )
			if ( telno.charAt(i) == pattern.charAt(j) )
				pos = 1;
		i++;
	}

	while ( pos == 1 && i < telno.length )

	if ( pos == 0 ) return false;
	return true;

}



// check email address pattern
function validEmail(addr) {

	var regex = /^[a-zA-Z0-9._-]+@([a-zA-Z0-9.-]+\.)+[a-zA-Z0-9.-]{2,4}$/;
	if ( !regex.test(addr) ) {
		return false;
	}
	return true;
}