Show / Hide Depending On Form Selection - How Best To Arrange Data

I have a big form which I'm tidying up by only showing elements when they become relevant, based on the currently selected input (eg to only show an option for 'waist size' when garment type 'jeans' has been selected). I've done this many times, and probably used a different approach each time, so I just wanted to see what other people do. It's currently along these lines: "If a particular option is selected, then show this element, otherwise hide it".

Code:
//the onclick handler
function checkViewType() {
//go through radio inputs in the cell and check what's clicked
document.getElementById('supplierOptions').style.display=radioCollection.supp.checked?"":"none";
document.getElementById('subCatOptions').style.display=radioCollection.subcat.checked?"":"none";
document.getElementById('subCatTimeOptions').style.display=radioCollection.subcat_sumtype_time.checked?"":"none";
document.getElementById('subCatSumOptions').style.display=radioCollection.subcat_sumtype_sum.checked?"":"none";
document.getElementById('subcat_weekmonth_span').innerHTML=radioCollection.subcat_time_week.checked?"week":"month";
}

But it's a big form, with lots of nested options, and some elements can be triggered visible by several different options. So I'm looking for an elegant way to handle this without a million if..elses. Perhaps an array of element ids and which elements are allowed visible when that's selected.