JQuery :: Show / Hide Table Rows Based On Groupnames

Say, for example, I have a table with an undefined number of rows. Row 1 contains number 1 to 10, row 2 contains 11 to 20... you get the picture. The table is autogenerated and id's are made unique by the system (GUID's plus id). I am able to add a 'name'attribute to'img''sthat are in the td's and add a groupname i.e. '11to20'. Using this i want to test showing/hiding grouprows. Now I have a dropdownlist on the page where the user selects the groupname from
i.e."11to20". I would like to be able to hide the rows not having the selected groupname
and show the rows that do. I've constructed a query that would hide the selected groupname but it hides all tr's.
$(obj).attr('name', obj.options[obj.selectedIndex].value).parents('tr').siblings().fadeOut('fast');

Here's the (simplified) sample html I constructed by hand for this message:
<fieldset class="my-form"><div>
<div class="NumberSelector"">
<label for="ChooseNumber">Choose a number</label>
<table id="ChooseNumber" cellspacing="10" border="0" style="width:542px;">
<tr><td><label for="ChooseNumber_1">
<img name="1To10" src="/images/number1.jpg" alt="number1" onclick="ImagePopup(this);"/> .....