// JavaScript Document

	var lastOpened = "";

	function showContent(obj){
		if (lastOpened != ""){
			var prevContent = document.getElementById(lastOpened);
			prevContent.style.display = "none";
		}
		var content = document.getElementById(obj);
		content.style.display = "block";
		lastOpened = obj;
	}

	function hideLast(){
		if (lastOpened != ""){
			var prevContent = document.getElementById(lastOpened);
			prevContent.style.display = "none";
		}
	}
	
	function changeImg(imageName,imgFile){
		document.images[imageName].src = imgFile;
	}
	
	function openPopup(idx,w,h){
		var childWindow;
		var urlArr = new Array("/about.html","/contact.html","/copyright-notice.html");
		var winSpecs = "width=" + w + ",height=" + h + ",top=50,left=50,scrollbars=yes,resizable=yes,toolbar=no,location=no,menubar=no";
		childWindow=window.open(urlArr[idx],"newPopup",winSpecs);
		childWindow.focus();
	}