function getElm(id) {
	elm = null;
	if (document.all) elm = document.all[id];
		else if (document.getElementById) elm = document.getElementById(id);
	return elm;
}

function setDisplay(id,mode) {
	var elm = getElm(id);
	//alert ("set "+id+" to "+mode+", elm:"+elm);
	elm.style.display=mode;
}