<html>
<head>
<script>
function order()
{
var it=event.srcElement;
var table=it;
var i,j,k;
var t1,t2;
if(it.tagName=="TH"){
i=it.cellIndex;
it.title=it.title=="asc"?"desc":"asc";
while(table.tagName!="TABLE")table=table.parentElement;
if(table.rows.length<3)return true;
for(j=1;j<table.rows.length;j++){
for(k=j+1;k<table.rows.length;k++){
if(it.title=="asc"?parseFloat(table.rows[k].cells[i].innerText)<parseFloat(table.rows[j].cells[i].innerText):parseFloat(table.rows[k].cells[i].innerText)>parseFloat(table.rows[j].cells[i].innerText))
table.rows[j].swapNode(table.rows[k]);
}
}
}
}
</script>
</head>
<body>
<table border="1">
<thead onclick="order()" style="cursor:hand;">
<th>Item 1</th><th>Item 2</th><th>Item 3</th><th>Item 4</th>
</thead>
<tr><td>12.3</td><td>423</td><td>86.83</td><td>1.213</td></tr>
<tr><td>2</td><td>434</td><td>5.334</td><td>.234</td></tr>
<tr><td>33</td><td>43</td><td>5.223</td><td>8.73</td></tr>
<tr><td>21.3</td><td>234</td><td>52.34</td><td>.666</td></tr>
<tr><td>33.4</td><td>59</td><td>67.2</td><td>.426</td></tr>
</table>
</body>
</html>
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