/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var offsetfrommouse=[15,20]; //image x,y offsets from cursor position in pixels. Enter 0,0 for no offset
var displayduration=0; //duration in seconds image should remain visible. 0 for always.
var currentimagewidth = 0;	// maximum image size.
var currentimageheight = 0;
var typepop=0; // type de popup, image=0, legende=1

if (document.getElementById || document.all){
	document.write('<div id="trailimageid">');
	document.write('</div>');
}

function gettrailobj(){
if (document.getElementById)
return document.getElementById("trailimageid").style
else if (document.all)
return document.all.trailimagid.style
}

function gettrailobjnostyle(){
if (document.getElementById)
return document.getElementById("trailimageid")
else if (document.all)
return document.all.trailimagid
}


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

function showtrail(imagename,description,width,height,type){
	typepop=type
	if (typepop==0){
		currentimagewidth = width;
		currentimageheight = height;
		document.onmousemove=followmouse;
		newHTML = '<div style="width:' + width + 'px; padding: 2px; background-color: #ffffff; border: 1px solid #663333;">';
		newHTML = newHTML + imagename + '<br>';
		newHTML = newHTML + description + '</div>';
		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="inline";
	}
	else{
		currentimagewidth = 0
		currentimageheight = 0
		document.onmousemove=followmouse;
		newHTML = '<div style="white-space: nowrap; padding: 2px; background-color: #ffffff; border: 1px solid #663333;">';
		newHTML = newHTML + description + '</div>';
		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="inline";
	}
}

function hidetrail(){
	gettrailobj().innerHTML = " ";
	gettrailobj().display="none"
	document.onmousemove=""
	gettrailobj().left="-500px"

}

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 (typepop==0){
		if (typeof e != "undefined"){
			if (docwidth - e.pageX < 380){
				xcoord = e.pageX - xcoord - currentimagewidth; // Move to the left side of the cursor
			} else {
				xcoord += e.pageX;
			}
			if (docheight - e.pageY < (currentimageheight + 150)){
				ycoord += e.pageY - Math.max(0,(150 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
			} else {
				ycoord += e.pageY;
			}

		} else if (typeof window.event != "undefined"){
			if (docwidth - event.clientX < 380){
				xcoord = event.clientX + truebody().scrollLeft - xcoord - currentimagewidth; // Move to the left side of the cursor
			} else {
				xcoord += truebody().scrollLeft+event.clientX
			}
			if (docheight - event.clientY < (currentimageheight + 150)){
				ycoord += event.clientY + truebody().scrollTop - Math.max(0,(150 + currentimageheight + event.clientY - docheight));
			} else {
				ycoord += truebody().scrollTop + event.clientY;
			}
		}
	}
	else{
		if (typeof e != "undefined"){
			xcoord += e.pageX;
			ycoord += e.pageY;
		} else if (typeof window.event != "undefined"){
			xcoord += truebody().scrollLeft+event.clientX
			ycoord += truebody().scrollTop + event.clientY;
		}
	}
	
	if(ycoord < 0) { ycoord = ycoord*-1; }
	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"
}

function followmouseBatch(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)

	var trailInnerDiv = $('trailInnerDiv');
	var currentimageheight = trailInnerDiv.offsetHeight;
	var currentimagewidth = trailInnerDiv.offsetWidth;

	scrollPos = Position.realOffset(truebody());
	
	if (typeof e != "undefined"){
		if (docwidth - e.pageX < 380){
			xcoord = e.pageX - xcoord - currentimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if ((e.pageY - scrollPos[1]) + currentimageheight > docheight){
			ycoord = -ycoord + (e.pageY - currentimageheight);
		} else {
			ycoord += e.pageY;
		}
	} else if (typeof window.event != "undefined"){
		if (event.clientX + currentimagewidth > docwidth){
			xcoord = -xcoord + ((event.clientX + scrollPos[0]) - currentimagewidth); // Move to the left side of the cursor
		} else {
			xcoord += (event.clientX + scrollPos[0]);
		}
		if (event.clientY + currentimageheight > docheight){
			ycoord = -ycoord + ((event.clientY + scrollPos[1]) - currentimageheight);
		} else {
			ycoord += (event.clientY + scrollPos[1]);
		}
	}

	if(ycoord < 0) { ycoord = ycoord*-1; }

	gettrailobj().left=xcoord+"px"
	gettrailobj().top=ycoord+"px"

}

function popup(content) {
  showtrail('',content,0,0,1);
  return;
}

function kill() {
  hidetrail();
  return;
}