window.onerror = null
	browserName = navigator.appName;
	browserVer = parseInt(navigator.appVersion);
	if (browserVer>= 3) version = "n3";
	else version = "n2";
	if (version == "n3")
	{
	standard = new Image;
	standard.src = "images/buttons/home_off_eng.gif";
	code = new Image;
	code.src = "images/buttons/home_on_eng.gif";
	standard1 = new Image;
	standard1.src = "images/buttons/aboutus_off_eng.gif";
	code1 = new Image;
	code1.src = "images/buttons/aboutus_on_eng.gif";
	standard2 = new Image;
	standard2.src = "images/buttons/wprogram_off_eng.gif";
	code2 = new Image;
	code2.src = "images/buttons/wprogram_on_eng.gif";
	standard3 = new Image;
	standard3.src = "images/buttons/news_off_eng.gif";
	code3 = new Image;
	code3.src = "images/buttons/news_on_eng.gif";
	standard4 = new Image;
	standard4.src = "images/buttons/energyinfo_off_eng.gif";
	code4 = new Image;
	code4.src = "images/buttons/energyinfo_on_eng.gif";
	standard5 = new Image;
	standard5.src = "images/buttons/publications_off_eng.gif";
	code5 = new Image;
	code5.src = "images/buttons/publications_on_eng.gif";
	standard6 = new Image;
	standard6.src = "images/buttons/membership_off_eng.gif";
	code6 = new Image;
	code6.src = "images/buttons/membership_on_eng.gif";
	standard7 = new Image;
	standard7.src = "images/buttons/links_off_eng.gif";
	code7 = new Image;
	code7.src = "images/buttons/links_on_eng.gif";
	}
	function flip (imageID,objectName) {
	if (version == "n3") {
	document.images[imageID].src = eval(objectName + ".src");
	}
	}