<script language="JavaScript">
            <!--
            var fruits_fp = document.forms['myForm'];
            var fruits_leftOpts = fruits_fp.elements['fruits_leftBox'].options;
            var fruits_rightOpts = fruits_fp.elements['fruits_rightBox'].options;
            var fruits_valueElt = fruits_fp.elements['fruits'];

            function fruits_updateValueElt() {
                var packedRightIDs = '';
                for (var i=0; i<fruits_rightOpts.length; i++) {
                    packedRightIDs += fruits_rightOpts[i].value +
                        (i < fruits_rightOpts.length - 1 ? "||" : "");
                }
                fruits_valueElt.value = packedRightIDs;
            }

            function fruits_splitSelectRightToLeft() {
                fruits_splitSelectAToB(fruits_rightOpts, fruits_leftOpts);
                fruits_updateValueElt();
            }

            function fruits_splitSelectLeftToRight() {
                fruits_splitSelectAToB(fruits_leftOpts, fruits_rightOpts);
                fruits_updateValueElt();
            }

            function fruits_splitSelectAToB(a, b) {
                for (var i=0; i<a.length; i++) {
                    if (a[i].selected) {
                        b[b.length] = new Option(
                            a[i].text, a[i].value, false, true
                        );
                        a[i] = null;
                    }
                }
            }

            function fruits_splitSelectOnChangeLeft() {
                fruits_rightOpts.selectedIndex = -1;
            }

            function fruits_splitSelectOnChangeRight() {
                fruits_leftOpts.selectedIndex = -1;
            }
            // -->
            </script>

[HTML] pobierz, plaintext 
<table cellpadding="2" cellspacing="2" align="center" class="stdFPOuterTable" border="0">
<tr><td class="stdFPOuterTableHeaderCell">Powiązania dokumentów</td></tr><tr><td class="stdFPOuterTableContentCell">
<form name="myForm" method="POST" action="documents.php?ACT=addConDocId" style="margin:0px;">
<input type="hidden" name="myFormSubmitIndicator" value="true">
<input type="hidden" name="docID" value="{$GET.FORCON}">
 
<table cellpadding="5" cellspacing="0" align="center" class="stdFPTable" border="0">
<tr><td>
<table cellpadding="5" cellspacing="0" border="0" width="90%" align="center">
<tr><td align="center">
<input type="hidden" name="fruits" value="">
<input type="hidden" name="Lang" value="{$DLANG}">
 
<table cellpadding="5" cellspacing="2" border="0">
<tr><td><span class="stdFPReqTitle">Dostępne dokumenty</span></td>
<td>&nbsp;</td><td><span class="stdFPReqTitle">Dokumenty powiązane:</span></td></tr>
<tr><td>
<select class="input2" multiple  name="fruits_leftBox" size="4" style="width:290px;height:340px" onchange="fruits_splitSelectOnChangeLeft()">
{foreach from=$RESULT.data item=v key=k}
<option value="{$v.Id}">{$v.Title}</option>
{/foreach}
</select>
</td>
<td><input class="input1" type="button" value=" -&gt; " onclick="fruits_splitSelectLeftToRight()" class="stdFPButton"><br><br><br><br><br><br><br><input class="input1" type="button" value=" &lt;- " onclick="fruits_splitSelectRightToLeft()" ></td><td>
<select multiple class="input2" name="fruits_rightBox" size="4" style="width:290px;height:340px" onchange="fruits_splitSelectOnChangeRight()">
{foreach from=$RESULTFORCON.data item=v key=k}
<option value="{$v.DocIdCon}">{$v.Title}</option>
{/foreach}
</select>
</td>
</tr>
</table>
[HTML] pobierz, plaintext