Hide control "Est. Revenue" on Opportunity form

If you want to hide "Est. Revenue" field for all except special CRM role and owner of this opportunity you can use following javascript code:

function GetCurrentUserRoles()
{
 var xml = "" +
"" +
"" +
GenerateAuthenticationHeader() +
" " +
" " +
" " +
" role" +
" " +
" " +
" name" +
" " +
" " +
" false" +
" " +
" " +
" roleid" +
" role" +
" systemuserroles" +
" roleid" +
" Inner" +
" " +
" " +
" systemuserid" +
" systemuserroles" +
" systemuser" +
" systemuserid" +
" Inner" +
" " +
" And" +
" " +
" " +
" systemuserid" +
" EqualUserId" +
" " +
" " +
" " +
" " +
" " +
" " +
" " +
" " +
" " +
" " +
"" +
"";
 var xmlHttpRequest = new ActiveXObject("Msxml2.XMLHTTP");
 xmlHttpRequest.Open("POST", "/mscrmservices/2007/CrmService.asmx", false);
 xmlHttpRequest.setRequestHeader("SOAPAction", " http://schemas.microsoft.com/crm/2007/WebServices/RetrieveMultiple");
 xmlHttpRequest.setRequestHeader("Content-Type", "text/xml; charset=utf-8");
 xmlHttpRequest.setRequestHeader("Content-Length", xml.length);
 xmlHttpRequest.send(xml);
 var resultXml = xmlHttpRequest.responseXML;
 return (resultXml);
}


function hideRevenue()
{
 UserID = Xrm.Page.context.getUserId();
 OwnerID = Xrm.Page.getAttribute("ownerid").getValue()[0].id;
 if (UserHasRole("Boss") || UserID == OwnerID)
 {
  Xrm.Page.ui.controls.get("estimatedvalue").setVisible(true);
 }
 else
 {
  Xrm.Page.ui.controls.get("estimatedvalue").setVisible(false);
 }
}