Here is my Javascript which is working initialyy and not working after a postback.
<script type="text/javascript">
$(document).ready(function(){
$('input[type="checkbox"]').click(function(){
if($(this).attr("value")=="cash"){
$(".cash").toggle();
}
if($(this).attr("value")=="cheque"){
$(".cheque").toggle();
}
if($(this).attr("value")=="dd"){
$(".dd").toggle();
}
});
});
</script>