Javascript Sorting Issue

Code:


var image_path = "http://pokerealm.hostei.com/pokemon/moves/";
var image_up = "arrowup.gif";
var image_down = "arrowdown.gif";
var image_none = "arrownone.png";
var europeandate = false;
var alternate_row_colors = true;

addEvent(window, "load", sortables_init);

var SORT_COLUMN_INDEX;
var thead = false;

function sortables_init() {
   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)) {
         ts_makeSortable(thisTbl);
      }
   }
}

function ts_makeSortable(t) {
   if (t.rows && t.rows.length > 0) {
      if (t.tHead && t.tHead.rows.length > 0) {
         var firstRow = t.tHead.rows[t.tHead.rows.length-1];
         thead = true;
      } else {
         var firstRow = t.rows[0];
      }
   }
   if (!firstRow) return;
   
   for (var i=0;i<firstRow.cells.length;i++) {
      var cell = firstRow.cells[i];
      var txt = ts_getInnerText(cell);
      if (cell.className != "unsortable" && cell.className.indexOf("unsortable") == -1) {
         cell.innerHTML = '<a href="#" class="sortheader" onclick="ts_resortTable(this, '+i+');return false;">'+txt+'<span class="sortarrow">&nbsp;&nbsp;<img src="'+ image_path + image_none + '" alt="&darr;"/></span></a>';
      }
   }
   if (alternate_row_colors) {
      alternate(t);
   }
}

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) {
   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 t = getParent(td,'TABLE');
   if (t.rows.length <= 1) return;
   var itm = "";
   var i = 0;
   while (itm == "" && i < t.tBodies[0].rows.length) {
      var itm = ts_getInnerText(t.tBodies[0].rows[i].cells[column]);
      itm = trim(itm);
      if (itm.substr(0,4) == "<!--" || itm.length == 0) {
         itm = "";
      }
      i++;
   }
   if (itm == "") return;
   sortfn = ts_sort_caseinsensitive;
   if (itm.match(/^\d\d[\/\.-][a-zA-z][a-zA-Z][a-zA-Z][\/\.-]\d\d\d\d$/)) sortfn = ts_sort_date;
   if (itm.match(/^\d\d[\/\.-]\d\d[\/\.-]\d\d\d{2}?$/)) sortfn = ts_sort_date;
   if (itm.match(/^-?[£$€Û¢´]\d/)) sortfn = ts_sort_numeric;
   if (itm.match(/^-?(\d+[,\.]?)+(E[-+][\d]+)?%?$/)) sortfn = ts_sort_numeric;
   SORT_COLUMN_INDEX = column;
   var firstRow = new Array();
   var newRows = new Array();
   for (k=0;k<t.tBodies.length;k++) {
      for (i=0;i<t.tBodies[k].rows[0].length;i++) {
         firstRow[i] = t.tBodies[k].rows[0][i];
      }
   }
   for (k=0;k<t.tBodies.length;k++) {
      if (!thead) {
         for (j=1;j<t.tBodies[k].rows.length;j++) {
            newRows[j-1] = t.tBodies[k].rows[j];
         }
      } else {
         for (j=0;j<t.tBodies[k].rows.length;j++) {
            newRows[j] = t.tBodies[k].rows[j];
         }
      }
   }
   newRows.sort(sortfn);
   if (span.getAttribute("sortdir") == 'down') {
         ARROW = '&nbsp;&nbsp;<img src="'+ image_path + image_down + '" alt="&darr;"/>';
         newRows.reverse();
         span.setAttribute('sortdir','up');
   } else {
         ARROW = '&nbsp;&nbsp;<img src="'+ image_path + image_up + '" alt="&uarr;"/>';
         span.setAttribute('sortdir','down');
   }
    for (i=0; i<newRows.length; i++) {
      if (!newRows[i].className || (newRows[i].className && (newRows[i].className.indexOf('sortbottom') == -1))) {
         t.tBodies[0].appendChild(newRows[i]);
      }
   }
    for (i=0; i<newRows.length; i++) {
      if (newRows[i].className && (newRows[i].className.indexOf('sortbottom') != -1))
         t.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")) {
            allspans[ci].innerHTML = '&nbsp;&nbsp;<img src="'+ image_path + image_none + '" alt="&darr;"/>';
         }
      }
   }      
   span.innerHTML = ARROW;
   alternate(t);
}

function getParent(el, pTagName) {
   if (el == null) {
      return null;
   } else if (el.nodeType == 1 && el.tagName.toLowerCase() == pTagName.toLowerCase()) {
      return el;
   } else {
      return getParent(el.parentNode, pTagName);
   }
}

function sort_date(date) {   
   // y2k notes: two digit years less than 50 are treated as 20XX, greater than 50 are treated as 19XX
   dt = "00000000";
   if (date.length == 11) {
      mtstr = date.substr(3,3);
      mtstr = mtstr.toLowerCase();
      switch(mtstr) {
         case "jan": var mt = "01"; break;
         case "feb": var mt = "02"; break;
         case "mar": var mt = "03"; break;
         case "apr": var mt = "04"; break;
         case "may": var mt = "05"; break;
         case "jun": var mt = "06"; break;
         case "jul": var mt = "07"; break;
         case "aug": var mt = "08"; break;
         case "sep": var mt = "09"; break;
         case "oct": var mt = "10"; break;
         case "nov": var mt = "11"; break;
         case "dec": var mt = "12"; break;
         // default: var mt = "00";
      }
      dt = date.substr(7,4)+mt+date.substr(0,2);
      return dt;
   } else if (date.length == 10) {
      if (europeandate == false) {
         dt = date.substr(6,4)+date.substr(0,2)+date.substr(3,2);
         return dt;
      } else {
         dt = date.substr(6,4)+date.substr(3,2)+date.substr(0,2);
         return dt;
      }
   } else if (date.length == 8) {
      yr = date.substr(6,2);
      if (parseInt(yr) < 50) {
         yr = '20'+yr;
      } else {
         yr = '19'+yr;
      }
      if (europeandate == true) {
         dt = yr+date.substr(3,2)+date.substr(0,2);
         return dt;
      } else {
         dt = yr+date.substr(0,2)+date.substr(3,2);
         return dt;
      }
   }
   return dt;
}

function ts_sort_date(a,b) {
   dt1 = sort_date(ts_getInnerText(a.cells[SORT_COLUMN_INDEX]));
   dt2 = sort_date(ts_getInnerText(b.cells[SORT_COLUMN_INDEX]));
   
   if (dt1==dt2) {
      return 0;
   }
   if (dt1<dt2) {
      return -1;
   }
   return 1;
}
function ts_sort_numeric(a,b) {
   var aa = ts_getInnerText(a.cells[SORT_COLUMN_INDEX]);
   aa = clean_num(aa);
   var bb = ts_getInnerText(b.cells[SORT_COLUMN_INDEX]);
   bb = clean_num(bb);
   return compare_numeric(aa,bb);
}
function compare_numeric(a,b) {
   var a = parseFloat(a);
   a = (isNaN(a) ? 0 : a);
   var b = parseFloat(b);
   b = (isNaN(b) ? 0 : b);
   return a - b;
}
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)
// cross-browser event handling for IE5+,   NS6 and Mozilla
{
   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");
   }
}
function clean_num(str) {
   str = str.replace(new RegExp(/[^-?0-9.]/g),"");
   return str;
}
function trim(s) {
   return s.replace(/^\s+|\s+$/g, "");
}
function alternate(table) {
   // Take object table and get all it's tbodies.
   var tableBodies = table.getElementsByTagName("tbody");
   // Loop through these tbodies
   for (var i = 0; i < tableBodies.length; i++) {
      // Take the tbody, and get all it's rows
      var tableRows = tableBodies[i].getElementsByTagName("tr");
      // Loop through these rows
      // Start at 1 because we want to leave the heading row untouched
      for (var j = 0; j < tableRows.length; j++) {
         // Check if j is even, and apply classes for both possible results
         if ( (j % 2) == 0  ) {
            if ( !(tableRows[j].className.indexOf('odd') == -1) ) {
               tableRows[j].className = tableRows[j].className.replace('odd', 'even');
            } else {
               if ( tableRows[j].className.indexOf('even') == -1 ) {
                  tableRows[j].className += " even";
               }
            }
         } else {
            if ( !(tableRows[j].className.indexOf('even') == -1) ) {
               tableRows[j].className = tableRows[j].className.replace('even', 'odd');
            } else {
               if ( tableRows[j].className.indexOf('odd') == -1 ) {
                  tableRows[j].className += " odd";
               }
            }
         }
      }
   }
}

I'm trying to make an HTML column sortable, but the script isn't working for numbers or percentages because it takes the first number in the cell, and uses that to place the value. I need it to take the entire number, and then determine how it will be sorted.

As an example, when sorted from largest to smallest, it shows 150 after it shows 90 because 9 is larger than 1.

Help?