<SCRIPT LANGUAGE="JAVASCRIPT">
<!--

function put_it()
   {
   var w = document.myform.sel_list.selectedIndex;
   document.myform.r_text.value = 
      document.myform.sel_list.options[w].text;
   }

//-->
</SCRIPT>

<FORM NAME="myform">
<SELECT NAME="sel_list" ondblclick="put_it()" SIZE="3">
<OPTION VALUE="value1">The First Item
<OPTION VALUE="value2">The Second Item
<OPTION VALUE="value3">The Third Item
<OPTION VALUE="value4">The Fourth Item
<OPTION VALUE="value5">The Fifth Item
</SELECT>
<BR>
<INPUT TYPE="TEXT" VALUE="" NAME="r_text" SIZE="20">
</FORM>