var activePanel = 0;

function activatePanel(n) {
	
	var el;
	var mitem;
	
	if(activePanel != -1) {
		
		if(activePanel == n)
			return;
		
		el = document.getElementById("spinfo" + activePanel);
		if(el)
			el.style.display = "none";
			
		var mitem = document.getElementById("spmenu" + activePanel);
		if(mitem)
			mitem.className = "spinactive";
	}
		
	el = document.getElementById("spinfo" + n);
	if(el) {
		el.style.display = "block";
		activePanel = n;
		
		mitem = document.getElementById("spmenu" + n);
		if(mitem)
			mitem.className = "spactive";	
	}
	

	
}