Sortable.create('november26',{dropOnEmpty:true,tag:'td',containment:['november26','november27','november28'],ghosting:true,constraint:false});

  Sortable.create('november27',{dropOnEmpty:true,containment:['november26','november27','november28'],ghosting:true,constraint:false});

  Sortable.create('november28',{dropOnEmpty:true,containment:['november26','november27','november28'],ghosting:true,constraint:false});

<script type="text/javascript" language="javascript">

var sortables = document.getElementsByClassName('sortables');

for(var i=0; i < sortables.length; i++){

        Sortable.create(sortables[i], {tree:true,dropOnEmpty:true,containment:sortables});

}

</script>

addEvent(window, "load", sortables_init);



var SORT_COLUMN_INDEX;



function sortables_init() {

    // Find all tables with class sortable and make them sortable

    if (!document.getElementsByTagName) return;

    tbls = document.getElementsByTagName("table");

    for (ti=0;ti<tbls.length;ti++) {

        thisTbl = tbls[ti];

        if (((' '+thisTbl.className+' ').indexOf("sortable") != -1) && (thisTbl.id)) {

            //initTable(thisTbl.id);

            ts_makeSortable(thisTbl);

        }

    }

}



function ts_makeSortable(table) {

    if (table.rows && table.rows.length > 0) {

        var firstRow = table.rows[0];

    }

    if (!firstRow) return;

    

    // We have a first row: assume it's the header, and make its contents clickable links

    for (var i=0;i<firstRow.cells.length;i++) {

        var cell = firstRow.cells[i];

        var txt = ts_getInnerText(cell);

        cell.innerHTML = '<a href="#" class="sortheader" '+ 

        'onclick="ts_resortTable(this, '+i+');return false;">' + 

        txt+'<span class="sortarrow">&nbsp;&nbsp;&nbsp;</span></a>';

    }

}



function ts_getInnerText(el) {

        if (typeof el == "string") return el;

        if (typeof el == "undefined") { return el };

        if (el.innerText) return el.innerText;  //Not needed but it is faster

        var str = "";

        

        var cs = el.childNodes;

        var l = cs.length;

        for (var i = 0; i < l; i++) {

                switch (cs[i].nodeType) {

                        case 1: //ELEMENT_NODE

                                str += ts_getInnerText(cs[i]);

                                break;

                        case 3: //TEXT_NODE

                                str += cs[i].nodeValue;

                                break;

                }

        }

        return str;

}



function ts_resortTable(lnk,clid) {

    // get the span

    var span;

    for (var ci=0;ci<lnk.childNodes.length;ci++) {

        if (lnk.childNodes[ci].tagName && lnk.childNodes[ci].tagName.toLowerCase() == 'span') span = lnk.childNodes[ci];

    }

    var spantext = ts_getInnerText(span);

    var td = lnk.parentNode;

    var column = clid || td.cellIndex;

    var table = getParent(td,'TABLE');

    

    // Work out a type for the column

    if (table.rows.length <= 1) return;

    var itm = ts_getInnerText(table.rows[1].cells[column]);

    sortfn = ts_sort_caseinsensitive;

    if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d\d\d$/)) sortfn = ts_sort_date;

    if (itm.match(/^\d\d[\/-]\d\d[\/-]\d\d$/)) sortfn = ts_sort_date;

    if (itm.match(/^[£$]/)) sortfn = ts_sort_currency;

    if (itm.match(/^[\d\.]+$/)) sortfn = ts_sort_numeric;

    SORT_COLUMN_INDEX = column;

    var firstRow = new Array();

    var newRows = new Array();

    for (i=0;i<table.rows[0].length;i++) { firstRow[i] = table.rows[0][i]; }

    for (j=1;j<table.rows.length;j++) { newRows[j-1] = table.rows[j]; }



    newRows.sort(sortfn);



    if (span.getAttribute("sortdir") == 'down') {

        ARROW = '&nbsp;&nbsp;&uarr;';

        newRows.reverse();

        span.setAttribute('sortdir','up');

    } else {

        ARROW = '&nbsp;&nbsp;&darr;';

        span.setAttribute('sortdir','down');

    }

    

    // We appendChild rows that already exist to the tbody, so it moves them rather than creating new ones

    // don't do sortbottom rows

    for (i=0;i<newRows.length;i++) { if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1))) table.tBodies[0].appendChild(newRows[i]);}

    // do sortbottom rows only

    for (i=0;i<newRows.length;i++) { if (newRows[i].className && (newRows[i].className.indexOf('sortbottom') != -1)) table.tBodies[0].appendChild(newRows[i]);}

    

    // Delete any other arrows there may be showing

    var allspans = document.getElementsByTagName("span");

    for (var ci=0;ci<allspans.length;ci++) {

        if (allspans[ci].className == 'sortarrow') {

            if (getParent(allspans[ci],"table") == getParent(lnk,"table")) { // in the same table as us?

                allspans[ci].innerHTML = '&nbsp;&nbsp;&nbsp;';

            }

        }

    }

        

    span.innerHTML = ARROW;

}



function getParent(el, pTagName) {

        if (el == null) return null;

        else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase())        // Gecko bug, supposed to be uppercase

                return el;

        else

                return getParent(el.parentNode, pTagName);

}

function ts_sort_date(a,b) {

    // y2k notes: two digit years less than 50 are treated as 20XX, greater than 50 are treated as 19XX

    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);

    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);

    if (aa.length == 10) {

        dt1 = aa.substr(6,4)+aa.substr(3,2)+aa.substr(0,2);

    } else {

        yr = aa.substr(6,2);

        if (parseInt(yr) < 50) { yr = '20'+yr; } else { yr = '19'+yr; }

        dt1 = yr+aa.substr(3,2)+aa.substr(0,2);

    }

    if (bb.length == 10) {

        dt2 = bb.substr(6,4)+bb.substr(3,2)+bb.substr(0,2);

    } else {

        yr = bb.substr(6,2);

        if (parseInt(yr) < 50) { yr = '20'+yr; } else { yr = '19'+yr; }

        dt2 = yr+bb.substr(3,2)+bb.substr(0,2);

    }

    if (dt1==dt2) return 0;

    if (dt1<dt2) return -1;

    return 1;

}



function ts_sort_currency(a,b) { 

    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).replace(/[^0-9.]/g,'');

    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).replace(/[^0-9.]/g,'');

    return parseFloat(aa) - parseFloat(bb);

}



function ts_sort_numeric(a,b) { 

    aa = parseFloat(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]));

    if (isNaN(aa)) aa = 0;

    bb = parseFloat(ts_getInnerText(b.cells[SORT_COLUMN_INDEX])); 

    if (isNaN(bb)) bb = 0;

    return aa-bb;

}



function ts_sort_caseinsensitive(a,b) {

    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]).toLowerCase();

    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]).toLowerCase();

    if (aa==bb) return 0;

    if (aa<bb) return -1;

    return 1;

}



function ts_sort_default(a,b) {

    aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);

    bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);

    if (aa==bb) return 0;

    if (aa<bb) return -1;

    return 1;

}





function addEvent(elm, evType, fn, useCapture)

// addEvent and removeEvent

// cross-browser event handling for IE5+,  NS6 and Mozilla

// By Scott Andrew

{

  if (elm.addEventListener){

    elm.addEventListener(evType, fn, useCapture);

    return true;

  } else if (elm.attachEvent){

    var r = elm.attachEvent("on"+evType, fn);

    return r;

  } else {

    alert("Handler could not be removed");

  }

}

              <tr>

                <td id="november_19" class="CalendarDay"><p>19</p></td>

                <td id="november_20" class="CalendarDay"><p>20</p></td>

                <td id="november_21" class="CalendarDay"><p>21</p></td>

                <td id="november_22" class="CalendarDay"><p>22</p></td>

                <td id="november_23" class="CalendarDay"><p>23</p>

                                  <ul id="list1" class="sortables">

                        <li id="article_1"><a href="#">My First Homebrew</a></li>

                                        <li id="article_2"><a href="#">Build Your Own Keggerator</a></li>

                                  </ul>

                </td>

                <td id="november_24" class="CalendarDay"><p>24</p>

                  <ul id="list2" class="sortables">

                    <li id="article_5" class="sortable"><a href="#">Yet Another Article</a></li>

                  </ul>

                                </td>

                <td id="november_25" class="CalendarDay"><p>25</p></td>

              </tr>

var dropzone = document.getElementsByClassName('CalendarDay');

var sortables = document.getElementsByClassName('sortables');

for(var i=0; i < dropzone.length; i++){

        sortables.push(dropzone[i]);

}

for(var i=0; i < sortables.length; i++){

        Sortable.create(sortables[i], {tree:true,dropOnEmpty:true,containment:sortables,constraint:false});

}

<style>

  #content #testlist { 

      list-style-type:none;

      margin:0;

      padding:0;

   }

   #content #testlist li {

     width:200px;

     font:13px Verdana;

     margin:0;

     margin-left:20px;

     padding-left:20px;

     padding:4px;

     cursor:move;

   }

  div.image {

      height:6px;

      width:200px;

      background: url(/images/image name.jpg) left top;

      margin-top:-3px;

      margin-left:-5px;

      z-index:1000;

      overflow: hidden;

   }



</style>



<ul id="testlist">

  <li id="image_1"whatever"</li>

  <li id="image_2"whatever"</li>

  <li id="image_3"whatever"</li>

  <li id="image_4"whatever"</li>

  <li id="image_5"whatever"</li>

  <li id="image_7"whatever"</li>

  <li id="image_6"whatever"</li>

  <li id="image_8"whatever"</li></ul>



<script type="text/javascript" language="javascript">

  Sortable.create('testlist',{ghosting:true,constraint:false})

  alert(Sortable.serialize('testlist'));

</script>