var gNavTabs = [], gNavContents = []
	var gGecko  = (navigator.userAgent.indexOf("Gecko") != -1)
	var gMacIe5 = (navigator.platform == "MacPPC" && navigator.appName == "Microsoft Internet Explorer" && document.getElementById)

	if (document.layers) {
		document.write('<style type="text/css">')
		document.write('a { font-size:10px; }')
		document.write('#nav #txtSearch { font-size:12px; font-family:verdana, tahoma, arial; }')
		document.write('</style>')
	}

	function showNavTab(num) {
		gNavTabs[1].s.visibility = (num == 1 ? "visible" : "hidden")
		gNavTabs[2].s.visibility = (num == 2 ? "visible" : "hidden")
		gNavContents[1].s.visibility = (num == 1 ? "visible" : "hidden")
		gNavContents[2].s.visibility = (num == 2 ? "visible" : "hidden")
		if (gGecko) {
			// gecko will not redraw unless you resize the screen.
			window.resizeBy(0,1)
			window.resizeBy(0,-1)
		}
	}

	function initTabs() {
		gNavTabs[1] = getLayer("navTabs1")
		gNavTabs[2] = getLayer("navTabs2")
		gNavContents[1] = getLayer("content1")
		gNavContents[2] = getLayer("content2")
	}

	function getLayer(sLyrName) {
		var o
		if (document.all) o = document.all[sLyrName]
		else if (document.getElementById) o = document.getElementById(sLyrName)
		else if (document.layers) o = getNsLayer(sLyrName)

		if (o) {
			o.s = o.style ? o.style : o
			return o
		} else {
			return 0
		}
	}