var isIE = navigator.appName == "Microsoft Internet Explorer";
function showAdd(list, row) {
	if (list.selectedIndex == 0) {
		document.getElementById(row).style.display = isIE ? 'block' : 'table-row';
	} else {
		document.getElementById(row).style.display = 'none';
	}
}
function toggleNumber(box, id) {
	if (document.getElementById(id))
		document.getElementById(id).disabled = !box.checked;
}
var displayed = null;
function showDetails(box) {
	if (displayed)
		displayed.style.display = 'none';
	switch (box.options[box.selectedIndex].text) {
	case 'Catheter':
		displayed = document.getElementById('catheter_detail');
		break;
	case 'Fistula':
		displayed = document.getElementById('fistula_detail');
		break;
	case 'Graft':
		displayed = document.getElementById('graft_detail');
		break;
	default:
		displayed = null;
		break;
	}
	if (displayed)
		displayed.style.display = isIE ? 'block' : 'table';
}

function toggleVisibility(){
   if (document.getElementById("filter").style.visibility == "hidden"){
      document.getElementById("filter").style.visbility="visible";
      }
   else
      {
     document.getElementById("filter").style.visibility="hidden";
     }
}