// center main frame vertically in page if there's room
	if (browser.app == "Netscape" && browser.ver < 5) {
		positionMainFrame = function() {
			// need to code netscape 4.0+ positioning
			//window.alert("Netscape loaded\n" + browser.app + "\n" + browser.ver + "\n" + browser.os);
		}
	}
	//else window.alert("Netscape loaded\n" + browser.app + "\n" + browser.ver + "\n" + browser.os);
	
	// script to run once window is loaded
	var targetRef;
	window.onload = function() {
		positionMainFrame();
		if (browser.app == "Microsoft" || browser.ver >= 5) {
			targetRef = document.getElementById("bodyFrame");
		}
		else {
			targetRef = document.bodyFrame;
		}
	}
	
	function goToPage(pageId) {
		targetRef.src = pageId + ".htm";
	}	
	
	function sizeBodyFrame(size) {
		var oBodyFrame = document.getElementById("bodyFrame");
		if (size == null) size = oBodyFrame.height;
		oBodyFrame.height = size + 1;
	}
	sizeBodyFrame.initHeight = null;