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

var offsetfrommouse=[25,-25]; //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 = 600;	// maximum image height.
var currentimagewidth = 640;	// maximum image width.

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

function getImgHeight(imgSrc)
{
var newImg = new Image();
newImg.src = imgSrc;
var height = newImg.height;
return height
}

function getImgWidth(imgSrc)
{
var newImg = new Image();
newImg.src = imgSrc;
var width = newImg.width;
return width
}

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(){
	var ua = navigator.userAgent.toLowerCase();
	if (ua.indexOf('safari/') != -1){
//return((!window.opera&&document.compatMode&&document.compatMode!="BackCompat")||window.opera)?document.documentElement:document.body
	return document.body
	}
	else
	{
	return((!window.opera&&document.compatMode&&document.compatMode!="BackCompat")||window.opera)?document.documentElement:document.body
	}
}

function showtrail(imagename,title,description,showthumb,width,height){

	if (height > 0){
		currentimageheight = height;
	}
	else {
		currentimageheight = getImgHeight(imagename);
	}
	
	if (width > 0){
		currentimagewidth = width;
	}
	else {
		currentimagewidth = getImgWidth(imagename);
	}
	
	currentimagewidth = currentimagewidth + 10;

	document.onmousemove=followmouse;

	cameraHTML = '';

	newHTML = '<div style="padding: 5px; background-color: #FFF; border: 1px solid #888; width: ' + currentimagewidth + 'px;">';
	newHTML = newHTML + '<h2>' + title + '</h2>';
	newHTML = newHTML + description + '<br/>';

	if (showthumb > 0){
		newHTML = newHTML + '<div align="center" style="padding: 8px 2px 2px 2px;"><img src="' + imagename + '" border="0"></div>';
	}
	//newHTML = newHTML + description + '<br/>';
	newHTML = newHTML + '</div>';

	gettrailobjnostyle().innerHTML = newHTML;

	gettrailobj().visibility="visible";

}


function hidetrail(){
	gettrailobj().visibility="hidden"
	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 (typeof e != "undefined"){
		if (docwidth - e.pageX < currentimagewidth + 50) { 
			xcoord = e.pageX - xcoord - currentimagewidth; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 50)){
			ycoord += e.pageY - Math.max(0,(50 + currentimageheight + e.pageY - docheight - truebody().scrollTop));
		} else {
			ycoord += e.pageY;
		}

	} else if (typeof window.event != "undefined"){
		if (docwidth - event.clientX < currentimagewidth+50){
			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 + 50)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(50 + 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"

}