You can use .htc files for that.... it would be something like that:
MyTable.htc
<PUBLIC:ATTACH EVENT="onclick" FOR="element" tagName="TD" ONEVENT="td_onclick()" />
function td_onclick()
{
var obj_td = window.event.srcElement; //get the TD element
//....do something
}
In your table, put this code:
<table id="Data" style="behavior:url(MyTable.htc)">
....
</table>
This may help you.
Rodrigo Pires