<script type="text/javascript">
<?php if($this->session->flashdata('success')){ ?>
    toastr.success("<?php echo $this->session->flashdata('success'); ?>");
<?php }else if($this->session->flashdata('error')){  ?>
    toastr.error("<?php echo $this->session->flashdata('error'); ?>");
<?php }else if($this->session->flashdata('warning')){  ?>
    toastr.warning("<?php echo $this->session->flashdata('warning'); ?>");
<?php }else if($this->session->flashdata('info')){  ?>
    toastr.info("<?php echo $this->session->flashdata('info'); ?>");
<?php } ?>
</script>
