function validateContactInput(){

	var validContactName = 0;
	var validContactEmail = 0;
	var validContactMessage = 0;
	var contactEmail = document.getElementById('contactEmail').value;	
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	
	if(document.getElementById('contactName').value != '') {validContactName = 1;}
	if(document.getElementById('contactMessage').value != '') {validContactMessage = 1;}
	if(filter.test(contactEmail)) { validContactEmail = 1; }

	if(validContactName == 1 && validContactEmail == 1 && validContactMessage == 1) {return true;} 
	
	else {

	var errorMessage = '';

	if(validContactName == 0)  { errorMessage += '- Your Name.\n';  }
	if(validContactEmail == 0) { errorMessage += '- Your Email Address.\n'; }
	if(validContactMessage == 0) { errorMessage += '- Your Message.\n'; }
	
	alert("Please complete the following fields:\n\n" + errorMessage);
	return false;
	}
}

function validateEmailItInput(){

	var validSendersName = 0;
	var validSendersEmail = 0;
	var validFriendsEmail = 0;
	var sendersEmail = document.getElementById('sendersEmail').value;
	var friendsEmail = document.getElementById('friendsEmail').value;	
	var filter  = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	
	if(document.getElementById('sendersName').value != '') {validSendersName = 1;}
	
	if(filter.test(sendersEmail)) { validSendersEmail = 1; }
	if(filter.test(friendsEmail)) { validFriendsEmail = 1; }
	if(validSendersName == 1 && validSendersEmail == 1 && validFriendsEmail == 1) {return true;} 
	
	else {

	var errorMessage = '';

	if(validSendersName == 0)  { errorMessage += '- Your Name.\n';  }
	if(validSendersEmail == 0) { errorMessage += '- Your Email Address.\n'; }
	if(validFriendsEmail == 0) { errorMessage += '- Your Friend\'s Email Address.\n'; }
	
	alert("Please complete the following fields:\n\n" + errorMessage);
	return false;
	}
}