aButtons = new Array(5);
iButtons = new Array(5);

for (i = 0; i < aButtons.length; i++) {
	aButtons[i] = new Image();
	iButtons[i] = new Image();
	aButtons[i].src = "pict/b" + i + "_do.gif";
	iButtons[i].src = "pict/b" + i + "_up.gif";
}

function btn_press(n) {
	window.document.images[n + 2].src = aButtons[n].src;	
}

function btn_release(n) {
	window.document.images[n + 2].src = iButtons[n].src;
}

function load_url(url) {
	document.frmNav.reset();
	document.frmNav.projects.blur();
	if (url.length > 0) parent.frmMain.location.href = url;
}