Passing Values From Select Box to Text Area

[raouleduke51]

I am trying to pass values to a text box from a select box. I have variables that I want users to be able to click on and enter in while they are typing text. I got it to work with this code, but it replaces the text that you are typing.

<SCRIPT LANGUAGE="JavaScript">
<!-- Begin
oldvalue = "";
function passText(passedvalue) {
  if (passedvalue != "") {
    var totalvalue = oldvalue+passedvalue;
    document.form.text_1.value = totalvalue;
    oldvalue = document.form.text_1.value;
  }
}
//  End -->

</script>

<form method="post" action="import.php" name="form">
                        <table width="100%" border="0" cellspacing="0" cellpadding="0">
  <tr>
    <td width="73%" class="text">1st Paragraph</td>
    <td width="27%">&nbsp;</td>
  </tr>
  <tr>
    <td><textarea cols="40" rows="5" name="text_1" ></textarea></td>
    <td><select name="dropdownbox1"  style="width:100;" size=4 multiple>
<option value="<%YEAR%>">YEAR</option>
<option value="<%MAKE%>">MAKE</option>
<option value="<%MODEL%>">MODEL</option>
<option value="<%VIN%>">VIN</option>
</select>
</td>
  </tr>
  <tr>
    <td>&nbsp;</td>
    <td><input type=button value="<<Insert<<" onClick="passText(this.form.dropdownbox1.options[this.form.dropdownbox1.selectedIndex].value);" style="width:100; height:20;">
</td>
  </tr>
</table>
</form> 

[JMRKER]

Take a peek at an earlier forum thread I posted that solved this for another user.
See: http://www.webdeveloper.com/forum/sh...d.php?t=110464