<!--
if(navigator.appName == "Netscape") {
	prefix = "document.";
	suffixInv = ".bgColor='#aaaaaa'";
	suffixNor = ".bgColor=null";
} else {
	prefix = "document.all.";
	suffixInv = ".style.backgroundColor='#bbbbbb'";
	suffixNor = ".style.backgroundColor='transparent'";
}

function invert(a) {
	str = prefix+a+suffixInv;
	eval(str);
}
function normal(a) {
	str = prefix+a+suffixNor;
	eval(str);
}
-->