CheckBox Dinamicos

[el_quick]

Código Javascript:

<div id="_container">
    <input type="checkbox" value="1" /><label>Opci&oacute;n 1</label><br />
    <input type="checkbox" value="2" /><label>Opci&oacute;n 2</label><br />
    <input type="checkbox" value="3" /><label>Opci&oacute;n 3</label><br />
    <input type="checkbox" value="4" /><label>Opci&oacute;n 4</label><br />
    <input type="checkbox" value="5" /><label>Opci&oacute;n 5</label><br />
    <input type="checkbox" value="6" /><label>Opci&oacute;n 6</label>
</div>
<input id="_test" type="submit" value="Test" />
<script language="javascript" type="text/javascript">
    document.getElementById("_test").onclick = function(){
        var r = "" ;
        var s = "" ;
        var inputs = document.getElementById("_container").getElementsByTagName("input") ;
        for(var i = 0 ; i < inputs.length ; i++){
            if(inputs[i].checked){
                r += s + inputs[i].value;
                s = "," ;
            }
        }
        alert(r);
    }
</script>