/* bof Image Mouse Over Zoom */

var mousecordx = 0;
var mousecordy = 0;

var offsetfrommouse = new Array(10,10);
var defaultimagewidth = 600;
var defaultimageheight = 400;

function truebody(){
  return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function followmouse(e){
	var xcoord=offsetfrommouse[0]
	var ycoord=offsetfrommouse[1]

  var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
  var docheight=document.all? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight)

	if (typeof e != "undefined"){
		if (docwidth - e.pageX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = e.pageX - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < defaultimageheight + 2*offsetfrommouse[1]){
			ycoord += e.pageY - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < defaultimagewidth + 2*offsetfrommouse[0]){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - defaultimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (defaultimageheight + 2*offsetfrommouse[1])){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(2*offsetfrommouse[1] + defaultimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}
	mousecordx=xcoord
	mousecordy=ycoord
}

function gettrailobj()
{
  if (document.getElementById)
  return document.getElementById("preview_div").style
}

function showLargeImage(img,folder) {
  if(folder){ setFolder = folder; }else{ setFolder = "/images/application_images/"; }
  if(img) document.getElementById("preview_div").innerHTML = '<img src="'+setFolder+img+'" border="0" alt="" />';
  gettrailobj().display = 'block';
  gettrailobj().visibility = 'visible';
  gettrailobj().top = mousecordy+'px';
  gettrailobj().left = mousecordx+'px';
}

function hideLargeImage() {
  gettrailobj().display = 'none';
  gettrailobj().visibility = 'hidden';
}

document.onmousemove = followmouse;

/* eof Image Mouse Over Zoom */