I need to select a radio button dynamically.

i) I have created few radio buttons dynamically, i.e. in a function using:

function funcName()

{

    Something.innerHTML = '<input type = radio name = rName id = 1 />' + '<input   type = radio name = rName id = 2 />' + '<input type = radio name = rName id = 3 />';



}

ii) I need to select a radio button dynamically, in another function:

function funcNAme(someVar)

{

    document.getElementById(someVar).checked = true;

}

But this does not work, i.e. the radio button doesn not get selected. However, 'disabled' works fine.
Also:

alert(someVar); 

returns the appropriate desired value.