java Script for Multiple email addresses validation

[koochi]

My form contains
<tr>
<td> MailAddresses</td>
<td><textarea name="mailaddresses" rows="4" cols="40"></textarea></td> </tr>

Here iam giving multiple email addresses separated by comma(,) in text area. Can any one provide java Script for Multiple email addresses validation to above scenario.......

Thankyou very much in advance...

[anupg]

function checkEmailForErrors (Form,Field) {
var emailFilter2=/(([a-zA-Z0-9\-?\.?]+)@(([a-zA-Z0-9\-_]+\.)+)([a-z]
{2,3})(\W?[,;]\W?(?!$))?)+$/i;
var emailValue2=eval("document."+Form+"."+Field+".value");
if (!(emailFilter2.test(emailValue2))) {
return false;
}else{
return true;
}
}

[xeel]

<script type="text/javascript">
function validate(email) {
   var reg = /^([A-Za-z0-9_\-\.])+\@([A-Za-z0-9_\-\.])+\.([A-Za-z]{2,4})$/;
   return reg.test(email);
}

function trim(str){
	var	str = str.replace(/^\s\s*/,''),
		ws = /\s/,
		i = str.length;
	while (ws.test(str.charAt(--i)));
	return str.slice(0, i + 1);
}

function checkAll(){
	var status = true;
	var i = 0;
	var emails = document.myform.mailaddresses.value.split(",");
	for(i=0; i<emails.length; i++){
		if(!validate(trim(emails[i]))){			
			alert("Incorrect format: "+emails[i]);
			status = false;
			break;
		}
	}
	if(status){
		alert("List validated, "+i+" emails found");
	}
}
</script>

<form name="myform">
	<textarea name="mailaddresses" rows="20" cols="100"></textarea>
	<input type="button" onclick="checkAll();" value="check" />
</form>

this would do I suppose...