contract = new Image();
expand = new Image();
contract.src = "/img/minus.gif";
expand.src = "/img/plus.gif";
	
function showHideDetail(numer) {
	symbol = numer + "1";
	theBase = document.getElementById(numer + "0");
	numer = document.getElementById(numer);
if( numer.style.display == "none" || !numer.style.display ) {
	document.getElementById(symbol).src = eval("contract.src");
	numer.style.display = "inline";
	theBase.style.display = "none";
} else {
	document.getElementById(symbol).src = eval("expand.src");
	numer.style.display = "none";
	theBase.style.display = "inline";
	}
	return false;
}