How to Get Rid of that Pesky “missing (jsForm.htm)” Message in ArcIMS


If you have ever worked on customizing an ArcIMS’ Htmlviewer application, you’ve probably run into an alert box informing you “Unable to start. Required HTML Form missing (jsForm.htm).” The file is where it should be but you’re still getting that message. These quick steps provide a solution to removing that alert box.

Difficulty Level: Easy    Time Required: One minute

Here’s How:

  • Open the aimsCommon.js in a text editor.
  • Look for the function getStartExtent.
  • Find the section:
    } else { alert(“Unable to start. Required HTML Form missing (jsForm.htm).”); }
  • Change this code to:
    } else { parent.location.reload(); //alert(“Unable to start. Required HTML Form missing (jsForm.htm).”); }






  • Make sure you clear your cache to remove any old files.




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