// JavaScript Document

function layerdisplayer(selector, element) {
	if (document.getElementById) {
		switch (selector) {
			case "Id":
				document.getElementById(element).style.display = (document.getElementById(element).style.display == "block") ? "none" : "block";
				break;
			case "Name":
				document.getElementsByName(element).style.display = (document.getElementsByName(element).style.display == "block") ? "none" : "block";
				break;
			case "TagName":
				document.getElementsByTagName(element).style.display = (document.getElementsByTagName(element).style.display == "block") ? "none" : "block";
				break;
		}	
	}
}

function backgroundImageChanger(selector, element, image1, image2) {
	if (document.getElementById) {
		switch (selector) {
			case "Id":
				document.getElementById(element).style.backgroundImage = (document.getElementById(element).style.backgroundImage == image2) ? image1 : image2;
				break;
			case "Name":
				document.getElementsByName(element).style.backgroundImage = (document.getElementsByName(element).style.backgroundImage == image2) ? image1 : image2;
				break;
			case "TagName":
				document.getElementsByTagName(element).style.backgroundImage = (document.getElementsByTagName(element).style.backgroundImage == image2) ? image1 : image2;
				break;
		}	
	}
}