Displaying "Required Label with Help" icon dynamically

Question

Hi,
I have an item say 'Dept Name', P1_DEPT_NAME
This field is mandatory in case of CREATE and optional in case of UPDATE.
- so in case of CREATE, I need to put the ICON (Required Label with Help) along with the Label 'Dept Name'
- in case of UPDATE, I don't need the ICON (Required Label with Help) along with the Label 'Dept Name' as it is an optional field.
How can I change the label dynamically.
the path of the icon is shown below but don't know where to put this as per my requirement.
<img src="#IMAGE_PREFIX#themes/theme_12/required.gif" alt="Required Field" />Thanks,
Deepak

Answer 1

Thanks..Shijesh
I have put the following code in Region Footer.
<script type="text/javascript">
var req =  $v('pRequest')  // getting the request
if (req == 'CREATE')    // if request = CREATE
   document.getElementById("IMG_ID").src ="<img src=#IMAGE_PREFIX#themes/theme_12/required.gif/>";       //set the image src to create image icon  
else
   document.getElementById("IMG_ID").src ="<img src=#IMAGE_PREFIX#themes/theme_12/optional.gif/>"; // set the image src to update icon
</script>Also, have update the item label with the following -
<img src="" id="IMG_ID" />
But images are not coming up.
also, every time either CREATE or UPDATE...it's going to the else part..that means it doesn't identifying the REQUEST value, I have checked couple of times but I am passing the exact REQUEST value.
Thanks,
Deepak