How to Showing ID value in SharePoint 2010

if you need to showing ID column when you open the edit list item so you can use this script below :

<script type="text/javascript"

   src="http://ajax.googleapis.com/ajax/libs/jquery/1.3.2/jquery.min.js">

</script>

<script type="text/javascript">

$(function() {

  // Get the ID from the query string

  var id = getQueryString()["ID"];

  // Find the form's main table

  var table = $('table.ms-formtable');

  // Add a row with the ID in

  table.prepend("<tr><td class='ms-formlabel'><h3 class='ms-standardheader'>ID</h3></td>" +

                "<td class='ms-formbody'>" + id + "&nbsp;</td></tr>");

})

function getQueryString() {

  var assoc = new Array();

  var queryString = unescape(location.search.substring(1));

  var keyValues = queryString.split('&');

  for (var i in keyValues) {

    var key = keyValues[i].split('=');

    assoc[key[0]] = key[1];

    }

  return assoc;

}

</script>