function toggleFilter(thisIndex) {
	document.zipSubmit.SHOWROOMSONLY[thisIndex].checked=true;
	if (thisIndex==0) {
		document.getElementById('filterShowroom').className = 'radio-checked';
		document.getElementById('filterAll').className = 'radio-unchecked';
	} else {
		document.getElementById('filterAll').className = 'radio-checked';
		document.getElementById('filterShowroom').className = 'radio-unchecked';
	}
}