title: Apex POP LOV image disable
body: <p>I am using APEX 4.0 and oracle 11g.<br>
  I have the following requirements,</p>
  
  <p>an Emp Name, Hiredate, address  and salary columns in the emp table and<br>
  deptno, deptname and location in the department table. 
  I have a master detail form.</p>
  
  <p>When I insert an employee row it should not allow to do changes to columns Ename, Hiredate, Dept Name and Location of the existing row and should only allow to add a new one.</p>
  
  <p>I am able to make read only for text fields like ename and hiredate.
  but how to disable the images of deptname(POPUP LOV) and Hiredate(datepicker image) ?</p>