<!--

//sniffer
function Is() {
  var agent = navigator.userAgent.toLowerCase();
  var is_major = parseInt(navigator.appVersion);
  var is_minor = parseFloat(navigator.appVersion);
  this.ns = ((agent.indexOf('mozilla')!=-1) && ((agent.indexOf('spoofer')==-1) && (agent.indexOf('compatible') == -1)) && (is_major < 5));
  this.ie = (agent.indexOf("msie") != -1);
  this.dom = ((agent.indexOf('mozilla')!=-1) && (agent.indexOf('gecko') != -1) && (is_major >= 5));
}

var is = new Is();

var shownLayer = '';

function showLayer(divname) {
	hideLayer();
	shownLayer = divname;
	if(is.ie) {
		document.all[divname+"b"].style.display = 'inline';
		document.all[divname+"a"].style.display = 'none';
	} else {
		document.getElementById(divname+"b").style.display = 'inline';
		document.getElementById(divname+"a").style.display = 'none';
	}
}

function hideLayer() {
	if(shownLayer != '') {
		if(is.ie) {
			document.all[shownLayer+"b"].style.display = 'none';
			document.all[shownLayer+"a"].style.display = 'inline';
		} else {
			document.getElementById(shownLayer+"b").style.display = 'none';
			document.getElementById(shownLayer+"a").style.display = 'inline';
		}
	}
}

// -->