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

Caitlin Dempsey


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

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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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About the author
Caitlin Dempsey
Caitlin Dempsey is the editor of Geography Realm and holds a master's degree in Geography from UCLA as well as a Master of Library and Information Science (MLIS) from SJSU.