JavaScript - Need Help Getting Switch Image To Be A Link As Well

//<!--

var imgList = new Array(
	"images/gallery/1.jpg",
	"images/gallery/2.jpg",
	"images/gallery/3.jpg",
	"images/gallery/5.jpg",
	"images/gallery/6.jpg",
	"images/gallery/duo.jpg"
	);

var clientData = new Array(
'',
'',
'',
'',
'',
'',
''
);

var currentMain = 0;
var currentMainT = 0;
var current_position=0;
var all_links="";

function init(){
	all_links=document.getElementById('gallery').getElementsByTagName('a');
	all_links[0].style.color="#7d3d3d";
	ShowMain(current_position);
}

function color_me(element,color){
	element.style.color=color;
}

function Prev(){
	color_me(all_links[current_position],'#000000');
	if((current_position-1)>-1){
		current_position=current_position-1;
	}
	else{
		current_position=(all_links.length-1);
	}
	ShowMain(current_position);
//	ShowMainT(current_position);
	color_me(all_links[current_position],'#7d3d3d');
}

function direct_selection(number){
	all_links[current_position].style.color="#000000";
	current_position=number;
	ShowMain(current_position);
	all_links[current_position].style.color="#7d3d3d";
}

function Next() {
	color_me(all_links[current_position],'#000000');
	if((current_position+1)<all_links.length){
		current_position++;
	}
	else{
		current_position=0;
	}
	ShowMain(current_position);
//	ShowMainT(current_position);
	color_me(all_links[current_position],'#7d3d3d');
}

function ShowMain(which){
	currentMain = which;
	currentMainT = which;
	if ( currentMain < 0 ) currentMain = 0;
	if ( currentMainT < 0 ) currentMainT = 0;
	if ( currentMain > imgList.length-1) currentMain = imgList.length-1; 
	if ( currentMainT > clientData.length-1) currentMainT = clientData.length-1;
	document.getElementById('mainImg').src = imgList[currentMain];
	document.getElementById('mainText').innerHTML = clientData[currentMainT];
	var PD = document.getElementById('Pg');
	var PD2 = document.getElementById('Pg2');
	
	document.getElementById("mainText").style.display = 'inline';
//	return false;
}

onload = function() { ShowMain(0); }
onload = function() { ShowMainT(0); }
//-->


//<!--
function preloader(){
	// counter
	var i = 0;

	// create object
	imageObj = new Image();

	// set image list
	images = new Array();
	images[0]="images/gallery/1.jpg";
	images[1]="images/gallery/2.jpg";
	images[2]="images/gallery/3.jpg";
	images[3]="images/gallery/5.jpg";
	images[4]="images/gallery/6.jpg";
	images[5]="images/gallery/duo.jpg";


	// start preloading
	for(i=0; i<=3; i++){
		imageObj.src=images[i];
	}
}
//-->

<img id="mainImg" src="images/gallery/1.jpg" style=" border: solid #7d3d3d 5px;" alt="galleryimage" />

<script type="text/javascript" language="javascript">
<!--
// Email obfuscator script 2.1 by Tim Williams, University of Arizona
// Random encryption key feature by Andrew Moulden, Site Engineering Ltd
// This code is freeware provided these four comment lines remain intact
// A wizard to generate this code is at http://www.jottings.com/obfuscator/

{ coded = "gUivfkUiz@Vzz38CfC.3ip.Uj"
  key = "gOoyt8wF74qDiElQcJTb6KXhNpS3skn510ueAfLV9BaHZxdGmrIW2CjvRYPUzM"
  shift=coded.length
  link=""
  for (i=0; i<coded.length; i++) {
    if (key.indexOf(coded.charAt(i))==-1) {
      ltr = coded.charAt(i)
      link += (ltr)
    }
    else {     
      ltr = (key.indexOf(coded.charAt(i))-shift+key.length) % key.length
      link += (key.charAt(ltr))
    }
  }
document.write("<a href='mailto:"+link+"'>"+link+"</a>")
}

function Browser() {

var ua, s, i;
var ln = 1;

this.isIE = false;
this.isNS = false;
this.version = null;

ua = navigator.userAgent;

s = "MSIE";
if ((i = ua.indexOf(s)) >= 0) {
this.isIE = true;
this.version = parseFloat(ua.substr(i + s.length));
return;
}

s = "Netscape6/";
if ((i = ua.indexOf(s)) >= 0) {
this.isNS = true;
this.version = parseFloat(ua.substr(i + s.length));
return;
}

// Treat any other "Gecko" browser as NS 6.1.

s = "Gecko";
if ((i = ua.indexOf(s)) >= 0) {
this.isNS = true;
this.version = 6.1;
return;
}
}

var browser = new Browser();

// Global object to hold drag information.

var dragObj = new Object();
dragObj.zIndex = 0;

function dragStart(event, id) {

var el;
var x, y;

// If an element id was given, find it. Otherwise use the element being
// clicked on.

if (id)
dragObj.elNode = document.getElementById(id);
else {
if (browser.isIE)
dragObj.elNode = window.event.srcElement;
if (browser.isNS)
dragObj.elNode = event.target;

// If this is a text node, use its parent element.

if (dragObj.elNode.nodeType == 3)
dragObj.elNode = dragObj.elNode.parentNode;
}

// Get cursor position with respect to the page.

if (browser.isIE) {
x = window.event.clientX + document.documentElement.scrollLeft
+ document.body.scrollLeft;
y = window.event.clientY + document.documentElement.scrollTop
+ document.body.scrollTop;
}
if (browser.isNS) {
x = event.clientX + window.scrollX;
y = event.clientY + window.scrollY;
}

// Save starting positions of cursor and element.

dragObj.cursorStartX = x;
dragObj.cursorStartY = y;
dragObj.elStartLeft = parseInt(dragObj.elNode.style.left, 10);
dragObj.elStartTop = parseInt(dragObj.elNode.style.top, 10);

if (isNaN(dragObj.elStartLeft)) dragObj.elStartLeft = 0;
if (isNaN(dragObj.elStartTop)) dragObj.elStartTop = 0;

// Update element's z-index.

dragObj.elNode.style.zIndex = ++dragObj.zIndex;

// Capture mousemove and mouseup events on the page.

if (browser.isIE) {
document.attachEvent("onmousemove", dragGo);
document.attachEvent("onmouseup", dragStop);
window.event.cancelBubble = true;
window.event.returnValue = false;
}
if (browser.isNS) {
document.addEventListener("mousemove", dragGo, true);
document.addEventListener("mouseup", dragStop, true);
event.preventDefault();
}
}

function dragGo(event) {

var x, y;

// Get cursor position with respect to the page.

if (browser.isIE) {
x = window.event.clientX + document.documentElement.scrollLeft
+ document.body.scrollLeft;
y = window.event.clientY + document.documentElement.scrollTop
+ document.body.scrollTop;
}
if (browser.isNS) {
x = event.clientX + window.scrollX;
y = event.clientY + window.scrollY;
}

// Move drag element by the same amount the cursor has moved.

dragObj.elNode.style.left = (dragObj.elStartLeft + x - dragObj.cursorStartX) + "px";
dragObj.elNode.style.top = (dragObj.elStartTop + y - dragObj.cursorStartY) + "px";

if (browser.isIE) {
window.event.cancelBubble = true;
window.event.returnValue = false;
}
if (browser.isNS)
event.preventDefault();
}

function dragStop(event) {

// Stop capturing mousemove and mouseup events.

if (browser.isIE) {
document.detachEvent("onmousemove", dragGo);
document.detachEvent("onmouseup", dragStop);
}
if (browser.isNS) {
document.removeEventListener("mousemove", dragGo, true);
document.removeEventListener("mouseup", dragStop, true);
}
}

<div id="milano" class="aBar" style="width:auto; height:auto;" onmousedown="dragStart(event, 'milano')">
    <?php 
		print '<a href="#"><img border="0" src="images/works/thumbnails/milano.jpg" alt="" style="float:left; position:absolute; top:'.rand(50,300).'px; left:'.rand(100,500).'px"/></a>'
	?>
  </div>

<script> 
		window.onload = function () { 
		
			document.getElementById("milano").onclick = function () {
				alert('AAAAA');
			}
		}
</script>

<script type="text/javascript">
		<!--Hide from incompatible browsers
		/* <![CDATA[ */
				
		function changeText()
		{
			document.getElementById('link').innerHTML = 'View Smaller Image';
			return false;		
		}
		
		function changeImage()
		{			
			var newImage = new Image();
			newImage.src = "images/cottage_large.jpg";
			document.getElementById('thumbnail').src = newImage.src;	
			return false; 											
		}
				
		/**/
		/* ]]> */
		
		// Stop hiding from incompatible browsers -->
	</script>

</head>

<body>
	
	<h3>Real Estate</h3>
		 
	<p><img src="images/cottage_small.jpg" id="thumbnail"></p>
    
	<a href="#" id="link" onclick="changeImage(); changeText();">View Larger Image</a>
	

</body>

</html>

var ie=document.all;
var nn6=document.getElementById&&!document.all;

var isdrag=false;
var x,y;
var dobj;

function movemouse(e)
{
	
  if (isdrag)
  {
    dobj.style.left = nn6 ? tx + e.clientX - x : tx + event.clientX - x;
    dobj.style.top  = nn6 ? ty + e.clientY - y : ty + event.clientY - y;	
    return false;
  }
  
}

function selectmouse(e) 
{
  var fobj       = nn6 ? e.target : event.srcElement;
  var topelement = nn6 ? "HTML" : "BODY";

  while (fobj.tagName != topelement && fobj.className != "dragme")
  {
	fobj = nn6 ? fobj.parentNode : fobj.parentElement;
  }

  if (fobj.className=="dragme")
  {
		isdrag = true;
		dobj = fobj;
		tx = parseInt(dobj.style.left+0);
		ty = parseInt(dobj.style.top+0);
		x = nn6 ? e.clientX : event.clientX;
		y = nn6 ? e.clientY : event.clientY;
		document.onmousemove=movemouse;

    return false;
  }
}

document.onmousedown=selectmouse;
document.onmouseup=new Function("isdrag=false");

<img src="images/balloons.gif" class="dragme">

function displayTitle(name) {
return name + " <a href='#' ><img src='direction.png' alt='Get driving directions'/></a>";

var userProfileUrl = chatProfileUrl+dUid.replace(/_/gi,"");		

		document.getElementById('userdetails').innerHTML += "<span class='userinfo' onClick=\"window.open('"+userProfileUrl+"','"+dUid+"')\"><img id='profile' style='cursor:pointer;vertical-align:middle;padding-top:4px;' src=images/zoom.png> View Profile</span></br>";

document.getElementById('userdetails').innerHTML += "<span class='userinfo' onClick=\"window.open('"+userProfileUrl+"','"+dUid+"')\"><img id='profile' style='cursor:pointer;vertical-align:middle;padding-top:4px;' src=images/gift.png> Send Gift</span></br>";