I have a table structure like this..
<form name="kuchbhi">
    <table id="x">
        <tr name="alpha"> 
            <td><input name="a" type="checkbox"></td>
            <td><input name="b" type="checkbox"></td>
        </tr>
        <tr name="beta"> 
            <td><input name="a" type="checkbox"></td>
            <td><input name="b" type="checkbox"></td>
        </tr>
    </table>
    <table id="y">
        <tr name="alpha"> 
            <td><input name="a" type="checkbox"></td>
            <td><input name="b" type="checkbox"></td>
        </tr>
        <tr name="beta">
            <td><input name="a" type="checkbox"></td>
            <td><input name="b" type="checkbox"></td> <!--This one-->
        </tr>
    </table>
</form>
Now, I have only 2 info (tr name) and (input name). For example I have (beta, a). Now I want to put a check on that checkbox (on the second table named y). How to select that checkbox?
 
     
    