function ChkVal(frm)
{
	with (frm)
    {
		if(!checkValidNull(vName,MSG_JS_ENTER_YOUR_NAME))
	        return false;		

		if(!checkValidNull(vEmail,MSG_JS_ENTER_YOUR_EMAIL))
        	return false;
		
		if(vEmail.value != ''){
			if(!isValidEmail(vEmail.value))	
			{
				vEmail.focus();
				return false;
			}
		}

		if(!checkValidNull(vFriendEmail,MSG_JS_ENTER_FRIEND_EMAIL))
					return false;
       
	   	frm.mode.value = 'Add';		
		frm.submit();
    }
}