function emailfriend() {	
	if(document.EmailFriend != null) {
		var w=window.open('','emailfriendWin','width=450,height=450,toolbar=0,location=0,directories=0,resizable=0,status=0,menubar=0,scrollbars=yes');
		document.EmailFriend.submit();
		if(w!=null) w.focus();
	 }
}

function isValidEmail(str) {
   return (str.indexOf(".") > 2) && (str.indexOf("@") > 0); 
}

function validateForm() {
	var r='';
	
	if(trim(document.SendArticle.userName.value)=='') r+='- Please enter your name.\n';
	
	
	if(trim(document.SendArticle.toEmail.value)=='') r+='- Please enter your friend\'s e-mail address.\n';			
	else {
		if(!isValidEmail(document.SendArticle.toEmail.value)) {
			r+='- Please enter a valid e-mail address for your friend.\n';
		}
	}
	
	
	if(trim(document.SendArticle.userEmail.value)=='') r+='- Please enter your e-mail address.\n';
	else {
		if(!isValidEmail(document.SendArticle.userEmail.value)) r+='- Please enter a valid address for your e-mail.\n';
	}
	
	if(r!='') {
		alert('The following fields are required:\n\n'+r);
		return false;
	}
	
	return true;
}

function sendMessage() {
	if(validateForm()) {
		document.SendArticle.submit();
	}
}