*  timer														        *
*																		*
*  This timer is started whenever the user presses a key in the input	*
*  field and pops if 0.9 second passes without a new keystroke			*
************************************************************************/

*  function onKeyDownName												*
*																		*
*  This method is called when a key is pressed in the Name field.		*
*  A timer is set so that when the user stops typing the selection		*
*  list is repopulated.												*
*																		*
*  Input:																*
*		event	if passed, event.keyCode identifies the key pressed		*
*				in older releases of Internet Explorer use window.event	*
************************************************************************/

   if (timer)

   timer	= setTimeout(update, 900);

*  function update														*
*																		*
*  This method is called when the user stops typing to repopulate		*
*  the selection list based upon the current contents of the Name		*
*  field.  It is also the onchange method for the following fields:	*
*  'birthmin', 'birthmax', 'incMarried', 'includeParents',				*
*  'includeSpouse', and 'Sex', and it is called by the onchange		*
*  method for the field 'treeName'.									*
************************************************************************/

   var	form	= document.nameForm;
   if (form)
   {		// form present

   }		// form present
   else
       alert("nominalIndex.js:update: cannot find form");

I have the following Javascript code which has been working for over 10 years and still works on Chrome, but does not work on FF 73.0 on Ubuntu Linux. ``` /************************************************************************ * timer * * * * This timer is started whenever the user presses a key in the input * * field and pops if 0.9 second passes without a new keystroke * ************************************************************************/ var timer = null; /************************************************************************ * function onKeyDownName * * * * This method is called when a key is pressed in the Name field. * * A timer is set so that when the user stops typing the selection * * list is repopulated. * * * * Input: * * event if passed, event.keyCode identifies the key pressed * * in older releases of Internet Explorer use window.event * ************************************************************************/ function onKeyDownName(event) { if (timer) clearTimeout(timer); timer = setTimeout(update, 900); } // function onKeyDownName /************************************************************************ * function update * * * * This method is called when the user stops typing to repopulate * * the selection list based upon the current contents of the Name * * field. It is also the onchange method for the following fields: * * 'birthmin', 'birthmax', 'incMarried', 'includeParents', * * 'includeSpouse', and 'Sex', and it is called by the onchange * * method for the field 'treeName'. * ************************************************************************/ function update() { var form = document.nameForm; if (form) { // form present var url = "/FamilyTree/getIndivNamesXml.php"; ... code to complete url by appending values of elements from form // invoke script to obtain list of names for selection list HTTP.getXML(url, // see O'Reilly Javascript gotNames, noNames); // clear out the old selection list while we are waiting var select = form.individ; select.options.length = 0; // put a dummy entry at the top of the selection, otherwise // selecting the first name does not call onchange var name = '[choose an individual]'; var option = new Option(name, -1, false, false); option.innerHTML = '[choose an individual]'; select.appendChild(option); } // form present else alert("nominalIndex.js:update: cannot find form"); } // function update ``` When I put alerts into nameOnKeyDown and update I see that nameOnKeyDown is called but update is never called. You can see the above code in action at https://www.jamescobban.net/FamilyTree/nominalIndex.php?name=allenby,%20a&treename=&lang=en This code has worked for over 10 years, and still is working today on Chrome, but the timer never pops on Firefox 73.0 on Ubuntu Linux 19.10.