// broswer sniff
NS4 = (document.layers) ? true : false;
IE4 = (document.all && !document.getElementById) ? true : false;
IE5 = (document.all && document.getElementById) ? true : false;
NS6 = (!document.all && document.getElementById) ? true : false;

function show() {
	var menu = 'gallery';
	if (window.popTimer) {
		stopTimer();
	}
	if (NS4){
	   change = document.layers[menu];
	   if(document.layers[this] != change){
	   		change.visibility = "visible";
		}
	}
	else if (IE4) {
	   change = document.all[menu];
	   change.style.visibility = "visible";
	}
	else if (IE5 || NS6) {
	   change = document.getElementById(menu);
	   change.style.visibility = "visible";
	}
}

function hide() {
	var menu = 'gallery';
	if (NS4){
	   change = document.layers[menu];
	   if(document.layers[this] != change){
	   		change.visibility = "hidden";
		}
	}
	else if (IE4) {
	   change = document.all[menu];
	   change.style.visibility = "hidden";
	}
	else if (IE5 || NS6) {
	   change = document.getElementById(menu);
	   change.style.visibility = "hidden";
	}
}

function startTimer() {
	if (NS4){ popTimer=setTimeout("hide()",2000) }
	else { popTimer=setTimeout("hide()",500)}
}

function stopTimer() {
	clearTimeout(popTimer);
}