how to disable select option when radio cheked in dynamically?

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Javascript

jQuery

HTML5

hi friends, thanks for your time.

Actually im creating whole div dynamically, inside the div have radio, select, textarea.

if i click button div will create dynamically(with controls), my problem is when i create div inside that div, if i click radio button i need to disbaled select option.

in this process need to continue if again i click button.

below my code,Radio id(Rfacet), select id(SFacet).

javascript
============

<script type="text/javascript">
$(document).on('click', "#addlink", function() {
var input = $('#aa');
    input.val(parseFloat(input.val()) + 1);

var randLetter = String.fromCharCode(65 + Math.floor(Math.random() * 26));
var uniqid = randLetter + Date.now();
var totaloptiondivs = document.getElementsByClassName("optiondiv");
var optioncount = parseInt(totaloptiondivs.length + 65);
var optionletter = String.fromCharCode(optioncount);
for(var i=0, n=totaloptiondivs.length;i<n;i++) {
for(var x=0, m=totaloptiondivs[i].childNodes.length;x<m;x++) {
if (totaloptiondivs[i].childNodes[x].className == "span1") {
totaloptiondivs[i].childNodes[x].innerHTML = String.fromCharCode(parseInt(65 + i)) + " :";
}
}
}
var newtext1 = "<div class='optiondiv span12' id='sample5'><div class='span1' style='margin-removed22px'>";
var newtext2 = " :</div><br><div class='span8'><input ><br><textarea class='input-xxlarge' id='";

var newtext3 = "'></textarea><br>
<select id='Sfacet' style='width:540px; margin-top:0px'><option value='1'>Select Facet</option><option value='2'>01. The student determines distance ny adding two or more positions during the motion.</option>
<option value='3'>02. The student does not distinguish position and/or distance from speed.</option>
<option value='4'>03. The student views a position or speed graph as a map of the actual motion.
</option>
</select>
</div>
<div class='span3' style='margin-removed270px'><a href='#x' id='removelink'>Remove</a></div></div>";

$("#addoptionshere").append(newtext1 + optionletter + newtext2 + uniqid + newtext3);
tinymce.EditorManager.execCommand('mceAddEditor', true, uniqid);
});
</script>

thanks friends
:)