/*
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 = 300;	// maximum image size.
var a="";

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,title,descr){
	document.onmousemove=followmouse;
	newHTML = '<div id="thumb">';
	newHTML = newHTML + '<h2>' + title + '</h2><br />';
	// Hack : flv/swf ou img ?
	if(imagename.lastIndexOf(".flv")==-1 && imagename.lastIndexOf(".swf")==-1){	
	newHTML = newHTML + '<img src="documents/img/' + imagename + '">';
	} else {
		newHTML = newHTML +'<p id="player"><a href="http://www.macromedia.com/go/getflashplayer">Get the Flash Player</a> to see this player.</p>';
		var FO = { movie:"inc/flashplayer/flvplayer.swf",width:"250",height:"200",majorversion:"7",build:"0",bgcolor:"#FFFFFF",             flashvars:"file=../../documents/img/"+imagename+"&showdigits=true&autostart=true" };
		UFO.create(FO,"player");
	}
	
	newHTML = newHTML + '<br /><h2>' + descr + '</h2></div>';
	
	gettrailobjnostyle().innerHTML = newHTML;
	gettrailobj().visibility="visible";
}

function hidetrail(){	
	gettrailobj().visibility="hidden";
	document.onmousemove="";
	gettrailobj().left="-500px";
	gettrailobjnostyle().innerHTML="";
}

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 < 300){
			xcoord = e.pageX - xcoord - 286; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 80)){
			ycoord += e.pageY - Math.max(0,(80 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < 300){
			xcoord = event.clientX + truebody().scrollLeft - xcoord - 286; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 80)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(80 + 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"
}