Javascript - Multiple DropDownLists - Call Single Function With ID?

I have the following code which toggles the visibility of one of a pair of DropDownLists based on the selected radio button. This code works but my problem is that I have several sets of controls just like this on a single form. How can I use a single JavaScript Toggle() function, irrespective of the ID of the RadioButtonList that triggered it?

function Toggle()
{
var list = document.getElementById("produceDDL");
var inputs = list.getElementsByTagName("input");
var selected;
for (var i = 0; i < inputs.length; i++)
{
if (inputs[i].checked)
{
selected = inputs[i];
break;
}
}
if (selected.value == 'Vegetables')
{
div1.style.display = 'none';
div2.style.display = 'block';
}
else
{
div1.style.display = 'block';
div2.style.display = 'none';
}
}
<asp:radiobuttonlist ID="produceDDL" OnClick="javascript:Toggle();"
RepeatDirection="Horizontal" runat="server">
<asp:ListItem Selected="True">Fruit</asp:ListItem>
<asp:ListItem>Vegetables</asp:ListItem>
</asp:radiobuttonlist>
<div id="div1">
<asp:DropDownList ID="fruitDDL" Width="120" runat="server">
<asp:ListItem>Select</asp:ListItem>
<asp:ListItem>Apples</asp:ListItem>
<asp:ListItem>Oranges</asp:ListItem>
</asp:DropDownList>
</div>
<div id="div2" style="display:none;">
<asp:DropDownList ID="vegDDL" Width="120" runat="server">
<asp:ListItem>Select</asp:ListItem>
<asp:ListItem>Onions</asp:ListItem>
<asp:ListItem>Potatoes</asp:ListItem>
</asp:DropDownList>
</div>