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

var offsetfrommouse=[15,15]; //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 currentimageheight = 250;	// maximum image size.

/* DOMS */
/*
Les noms des variables suivantes sont un peu farfelues et surtout pas du tout explicites !
*/

var valeurpos1 = 400; /* Limite de basculement en X par rapport au bord droit (380) */
var valeurpos2 = 600; /* Décalage en X de la fenêtre lors du basculement, à gauche  (400)*/
var valeurpos3 = 100; /* Décalage en X de la fenêtre ?? 110 */


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 truebody(){
return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.html
}
*/


function showtrail(image,height){

	if (height > 0){
		currentimageheight = height;
	}

	document.onmousemove=followmouse;

	newHTML = '<div id="bulle"><table style="width:300px;height:297px;border:0;" cellpadding="0" cellspacing="0"><tr valign="middle"><td align="center">';

	newHTML = newHTML + '<img src="' + image + '" border="0">';
	newHTML = newHTML + '</td></tr></table></div>';
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().display="inline";
}



function showmessage(message,height){

	if (height > 0){
		currentimageheight = height;
	}

	document.onmousemove=followmouse;

	gettrailobjnostyle().innerHTML = '<div id="message">' + message + '</div>';
	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] - 95;

	/* pageXOffset pour Netscape */
	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 (document.all){
	//	gettrailobjnostyle().innerHTML = 'A = ' + truebody().scrollHeight + '<br>B = ' + truebody().clientHeight;
	//} else {
	//	gettrailobjnostyle().innerHTML = 'C = ' + document.body.offsetHeight + '<br>D = ' + window.innerHeight;
	//}

	if (typeof e != "undefined"){
		if (docwidth - e.pageX < valeurpos1){
			xcoord = e.pageX - xcoord - valeurpos2; // Move to the left side of the cursor
		} else {
			xcoord += 250;
		}
		if (docheight - e.pageY < (currentimageheight + valeurpos3)){
			ycoord += e.pageY - Math.max(0,(valeurpos3 + currentimageheight + e.pageY - docheight - truebody().scrollTop) );
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < valeurpos1){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - valeurpos2; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + valeurpos3)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(valeurpos3 + currentimageheight + event.clientY - docheight));
		} else {
			ycoord += truebody().scrollTop + event.clientY;
		}
	}

	var docwidth=document.all? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth-15
	var docheight=document.all? Math.max(truebody().scrollHeight, truebody().clientHeight) : Math.max(document.body.offsetHeight, window.innerHeight)
		if(ycoord < 0) { ycoord = ycoord*-1; }

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

}