function menu(menuitem)
{
	document.getElementById("arrow1").src="./images/block.gif";
	document.getElementById("arrow2").src="./images/block.gif";
	document.getElementById("arrow3").src="./images/block.gif";
	document.getElementById("arrow4").src="./images/block.gif";
	document.getElementById("arrow5").src="./images/block.gif";
	document.getElementById("arrow6").src="./images/block.gif";
	document.getElementById("arrow7").src="./images/block.gif";
	document.getElementById("arrow8").src="./images/block.gif";
	document.getElementById(menuitem).src="./images/arrow.gif";
}

function dot(menuitem)
{
	menu("arrow3");
	document.getElementById("dot1").src="./images/block.gif";
	document.getElementById("dot2").src="./images/block.gif";
	document.getElementById("dot3").src="./images/block.gif";
	document.getElementById("dot4").src="./images/block.gif";
	document.getElementById("dot5").src="./images/block.gif";
	document.getElementById("dot6").src="./images/block.gif";
	document.getElementById("dot7").src="./images/block.gif";
	document.getElementById("dot8").src="./images/block.gif";
	document.getElementById("dot9").src="./images/block.gif";
	document.getElementById("dot10").src="./images/block.gif";
	document.getElementById("dot11").src="./images/block.gif";
	document.getElementById("dot12").src="./images/block.gif";
	document.getElementById("dot13").src="./images/block.gif";
	document.getElementById("dot14").src="./images/block.gif";
	document.getElementById("dot15").src="./images/block.gif";
	document.getElementById(menuitem).src="./images/orange-bullet.gif";
}

function popwin(img, myname, w, h)
{
	var winL = (screen.width - w) / 2;
	var winT = (screen.height - h) / 2;
	winprops = 'height=' + h + ',width=' + w + ',top=' + winT + ',left=' + winL + ',scrollbars=no,resizable=no';
	var win = window.open('photo.aspx?image=' + img, myname, winprops);
}

function videowin(video, myname, w, h, scroll)
{
	var winL = (screen.width - w) / 2;
	var winT = (screen.height - h) / 2;
	winprops = 'height=' + h + ',width=' + w + ',top=' + winT + ',left=' + winL + ',scrollbars=' + scroll + ',resizable=no';
	var win = window.open(video, myname, winprops);
}

function diagramwin(img, myname, w, h, imgw)
{
	var winL = (screen.width - w) / 2;
	var winT = (screen.height - h) / 2;
	winprops = 'height=' + h + ',width=' + w + ',top=' + winT + ',left=' + winL + ', scrollbars=no,resizable=no';
	var win = window.open('diagram.aspx?image=' + img + '&w=' + imgw, '_blank', winprops);
}