// JavaScript Document
function checkEmail(email) 
{
	if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email))
	{
		return (true);
	}
	return false;
}

function checkAnnounce(theForm)
{
	var email_to = theForm['email_to[0]'];
	var email_from = theForm.email_from.value;
	var name_from = theForm.name_from.value;
	email_to = email_to.value;
	var email1 = theForm['email_to[1]'];
	var email2 = theForm['email_to[2]'];
	var email3 = theForm['email_to[3]'];
	var email4 = theForm['email_to[4]'];
	email1 = email1.value;
	email2 = email2.value;
	email3 = email3.value;
	email4 = email4.value;
	if(email_to.length==0)
	{
		alert("Please enter your friend's e-mail!");
		document.catForm['email_to[0]'].focus();
		return false;
	}
	if(checkEmail(email_to) == false)
	{
		alert("Invalid e-mail address! Please re-enter.");
		document.catForm['email_to[0]'].select();
		return false;		  
	}
	if(email1.length>0)
	{
		if(checkEmail(email1) == false)
		{
			alert("Invalid e-mail address! Please re-enter.");
			document.catForm['email_to[1]'].select();
			return false;		  
		}
	}
	if(email2.length>0)
	{
		if(checkEmail(email2) == false)
		{
			alert("Invalid e-mail address! Please re-enter.");
			document.catForm['email_to[2]'].select();
			return false;		  
		}
	}
	if(email3.length>0)
	{
		if(checkEmail(email3) == false)
		{
			alert("Invalid e-mail address! Please re-enter.");
			document.catForm['email_to[3]'].select();
			return false;
		}
	}
	if(email4.length>0)
	{
		if(checkEmail(email4) == false)
		{
			alert("Invalid e-mail address! Please re-enter.");
			document.catForm['email_to[4]'].select();
			return false;		  
		}
	}

	if(email_from.length==0)
	{
		alert("Please enter your e-mail!");
		theForm.email_from.focus();
		return false;
	}
	if(checkEmail(email_from) == false)
	{
		alert("Invalid your e-mail! Please re-enter.");
		theForm.email_from.select();
		return false;		  
	}
	if(name_from.length==0)
	{
		alert("Please enter your name!");
		theForm.name_from.focus();
		return false;
	}
	return true;
}