function SubmitGuestbook(){
	
	var frm = document.guestbook;
	var arrRequired = new Array('name' );
	var count = 0;
	
	for (var i in arrRequired) {
		
		if (Trim(frm.elements[arrRequired[i]].value) == '') {
			alert( "Please Complete All Compulsory Contact Details\n" );
			return false;
		}		
	}
	
	frm.action = "send.php";
	frm.submit();
}


function Trim(strInput) {
	// Trims whitespace characters from a string.
	return strInput.replace(/\s/g, '');
}


function ValidEmailAddress(strEmailAddress){
	// Used to check if an email address is valid or not. Returns true if valid, otherwise returns false.
	var re = /^[a-zA-Z0-9\_\-\'\&\*\!\#]+(\.[a-zA-Z0-9\_\-\'\&\*\!\#]+)*\@[a-zA-Z0-9\_\-\'\&\*\!\#]+(\.[a-zA-Z0-9\_\-\'\&\*\!\#]+)*\.([A-Za-z]{2,4}|[0-9]{1,3})$/;
	if (!re.test(strEmailAddress))
		return false;
	return true;
}