function changeNav(ipos) {
		imax = gMediaPic.length-1;
		strtxt = "";
		if (imax > 0){
			strtxt = "<a href='#' onclick='prevPic()'><img src='../img/nav/mn_prev.jpg' height='19'/></a>&nbsp;&nbsp;";
		}
		for (i = 0; i <= imax; i++) {
			strtxt = strtxt + "<a href='#' onclick='changePic(" + i + ")'>"
			if (i == ipos) {
				strtxt = strtxt + "<img src='../img/nav/mn_" + (i+1) + "r.jpg' width='15' height='19'/></a>&nbsp;&nbsp;"  
			} else {
				strtxt = strtxt + "<img src='../img/nav/mn_" + (i+1) + ".jpg' width='15' height='19'/></a>&nbsp;&nbsp;" 
			}
		}
		if (imax > 0){
			strtxt = strtxt +  "<a href='#' onclick='nextPic()'><img src='../img/nav/mn_next.jpg' height='19'/></a>"
		}
		document.getElementById("navcontrols").innerHTML = strtxt;
	}
function changeImg(iImg,iFile) {
	document.getElementById(iImg).src = iFile
}


	function changePic(i) {
		tStr = "Photo Number " + (i+1) + " of " + (gMediaPic.length);
		window.status = tStr;
		document.getElementById("mediapic").src = gSub + gMediaPic[i] + gBase;
		document.getElementById("mediapic").alt = gMediaPic[i];
		t = gMediaPicTxt[i];
		t = t.replace("~~","'")
		t = t.replace("~~","'")
		t = t.replace("~~","'")
		t = t.replace("~~","'")
		document.getElementById("mediaNotes").innerHTML = t;
		changeNav(i)
		gPos = i
	}
	function nextPic() {
		gPos++;
		if (gPos > gMediaPic.length-1) {
			gPos = gMediaPic.length-1
		}
		changePic(gPos)
	}
	function prevPic() {
		gPos--;
		if (gPos < 0) {
			gPos = 0
		}
		changePic(gPos)
	}