function hideLayer(layerName){
	for (var i = 0; i < arguments.length; i++){
		if (document.layers){
			if(!document.layers[arguments[i]]) continue;
			document.layers[arguments[i]].visibility = "hidden";
		} else if(document.getElementById){
			if(!document.getElementById(arguments[i])) continue;
			document.getElementById(arguments[i]).style.visibility = "hidden";
		}else if(document.all){
			if(!document.all[arguments[i]]) continue;
			document.all[arguments[i]].style.visibility = "hidden";
		}
	}
}
		
function showLayer(layerName){
	//writeContent(layerName);
	for (var i = 0; i < arguments.length; i++){
		if (document.layers){
			if(!document.layers[arguments[i]]) continue;
			document.layers[arguments[i]].visibility = "visible";
		} else if(document.getElementById){
			if(!document.getElementById(arguments[i])) continue;
			document.getElementById(arguments[i]).style.visibility = "visible";
		}else if(document.all){
			if(!document.all[arguments[i]]) continue;
			document.all[arguments[i]].style.visibility = "visible";
		}
	}
}

function changeFrameContent(frameLocation){
	document.getElementById("frameContent").innerHTML = '<iframe width="500" height="550" frameborder="0" src="'+frameLocation+'.html"></iframe>';

	var tmp1 = frameLocation.substring(0,1);
	var tmp2 = frameLocation.substring(1,frameLocation.length);
	
	tmp1 = tmp1.toUpperCase();
	frameLocation = tmp1+tmp2;
	//alert(frameLocation);
	document.getElementById("layerContentHeadline").innerHTML = frameLocation;
}

function fixPNG(myImage,wie){ // correctly handle PNG transparency in Win IE 5.5 or higher.
	ie55up = false;
	chb = '';
	name = navigator.appName;
	version = navigator.appVersion;
	
	splits=version.split('MSIE ');
	
	if(splits.length > 1){
		chb = splits[1].substring(0,3);
	}
	
	if((chb=='5.5')||(chb=='6.0')){
		ie55up = true;
	}

	if (window.ie55up){
		var imgID = (myImage.id) ? "id='" + myImage.id + "' " : ""
		var imgClass = (myImage.className) ? "class='" + myImage.className + "' " : ""
		var imgTitle = (myImage.title) ? "title='" + myImage.title + "' " : "title='" + myImage.alt + "' "
		var imgStyle = "display:inline-block;" + myImage.style.cssText 
		var strNewHTML = "<span " + imgID + imgClass + imgTitle
		strNewHTML += " style=\"" + "width:" + myImage.width + "px; height:" + myImage.height + "px;" + imgStyle + "z-index:39;"
		strNewHTML += "filter:progid:DXImageTransform.Microsoft.AlphaImageLoader"
		strNewHTML += "(src=\'" + myImage.src + "\', sizingMethod='"+wie+"');\"></span>" 
		myImage.outerHTML = strNewHTML
	}
}