/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
/
This file has been modified by GoodSitesIreland.com
Visit http://www.goodsitesireland.com for web design services
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 imageMargin = 0; // image margin (div.image_preview img) from CSS - must be the same!

var defaultimageheight = 40;	// maximum image size.
var defaultimagewidth = 40;	// maximum image size.

var timer;

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

function gettrailobjnostyle() {
	if (document.getElementById) {
		return document.getElementById("preview_div");
	}
}

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

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

function showtrail(imagename,width,height) {
	i = imagename;
	w = width;
	h = height;
	timer = setTimeout("show('"+i+"',w,h);",100);
}

function show(imagename, width, height) {
	var docwidth = document.all ? truebody().scrollLeft+truebody().clientWidth : pageXOffset+window.innerWidth - offsetfrommouse[0];
	var docheight = document.all ? Math.min(truebody().scrollHeight, truebody().clientHeight) : Math.min(window.innerHeight);

	if ((navigator.userAgent.indexOf("Konqueror")==-1  || navigator.userAgent.indexOf("Firefox")!=-1 || (navigator.userAgent.indexOf("Opera")==-1 && navigator.appVersion.indexOf("MSIE")!=-1)) && (docwidth>650 && docheight>500)) {
		( width == 0 ) ? width = defaultimagewidth: '';
		( height == 0 ) ? height = defaultimageheight: '';

		width += imageMargin*2;
		height += imageMargin*2;
		defaultimageheight = height;
		defaultimagewidth = width;

		document.onmousemove = followmouse;

		newHTML  = '<div class="image_preview" style="width:'+  width +'px;height:'+ height +'px;">';
		newHTML += '	<div id="loader_container">';
		newHTML += '		<div class="loader">';
		newHTML += '			<div align="center"></div>';
		newHTML += '			<div id="loader_bg">';
		newHTML += '				<div id="progress"> </div>';
		newHTML += '			</div>';
		newHTML += '		</div>';
		newHTML += '	</div>';
		newHTML += '	<div class="preview_temp_load">'
		newHTML += '		<img onload="javascript:remove_loading();" src="' + imagename + '" border="0" />';
		newHTML += '	</div>';
		newHTML += '</div>';

		if(navigator.userAgent.indexOf("MSIE")!=-1 && navigator.userAgent.indexOf("Opera")==-1 ){
			newHTML = newHTML+'<iframe src="about:blank" scrolling="no" frameborder="0" width="'+width+'" height="'+height+'"></iframe>';
		}

		gettrailobjnostyle().innerHTML = newHTML;
		gettrailobj().display="block";
	}
}

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

function remove_loading() {
	if (document.getElementById) {
		document.getElementById("loader_container").style.display = 'none';
	}
}