function checkEmail(str) 
{
var strFilter=/^([\w-]+(?:\.[\w-]+)*)@((?:[\w-]+\.)*\w[\w-]{0,66})\.([a-z]{2,6}(?:\.[a-z]{2})?)$/i;

if (strFilter.test(str))
{ return true; }
else
{ return false; }
}

function validateEmails()
{

var newemail = document.forms["sub"].elements["newemail"].value;

var oldemail = document.forms["sub"].elements["oldemail"].value;




if (!checkEmail(newemail)) 

{ alert("Please input a valid email address for the recipient"); 
document.forms["sub"].elements["newemail"].focus();
return false;
   }



else if(newemail == oldemail) {
        alert('The new email address is the same as the last one.');
        return false;
   }






else{
        return true;


}










} 


//-->