function showdiv(div_id, show) {
	obj = document.getElementById(div_id);
	if (obj) {
		if (show) {
			obj.style.display="block";
			obj.style.visibility="visible";
		} else {
			obj.style.display="none";
			obj.style.visibility="hidden";
		}
	}
}
function delete_image(obj_id) {
	obj = document.getElementById(obj_id);
	if (obj) {
		deletefield = document.getElementById('delete_'+obj_id);
		button = document.getElementById(obj_id+'_button');
		if (deletefield) {
			if (deletefield.value == '0') {
				if (confirm("Are you sure you wish to delete this photo? You must submit the form to make this change permanent. Until then, you can undo this action by clicking the 'undo' button.")) {
					deletefield.value = '1';
					obj.disabled = true;
					showdiv('div_delete_'+obj_id, false);
					if (button) button.value = "Undo Delete";
				}
			} else {
				deletefield.value = '0';
				obj.disabled = false;
				showdiv('div_delete_'+obj_id, true);
				if (button) button.value = "Delete";
			}
		}
	}
}