// Trailing Image Preview

/* 
Author: Scott Ord, Pentura Solutions
Copyright 2005-2006
This code may be modified as long as this comment stays intact
*/

// Inspired by and modified from:
/*
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,-120]; //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 = 100;	// maximum image height.
var currentimagewidth = 100;	// maximum image width.


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

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

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


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

function showtrail(imagename, index) {
		
	document.onmousemove=followmouse;

	newHTML = '<div id="imageContainer">';
	
	if (index != -1) {
		var title = getTitle(index);
		var desc = getDesc(index);
		var price = getPrice(index);
	
		if (title != "") {
			newHTML = newHTML + '<h4>' + title + '</h4><div class="underline"></div>';
		}

		if (desc != "") {
			newHTML = newHTML + '<p class="descText">' + desc + '</p>';
		}

		if (price != "") {
			newHTML = newHTML + '<p class="priceText">Price:&nbsp;&nbsp;$' + price + '</p><br/>';
		}
	}
	
		
	newHTML = newHTML + '<div id="image"><img src="' + imagename + '"></div>';
	
	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(document.body.offsetHeight, 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 < 300){
			xcoord = e.pageX - xcoord - 350; // Move to the left side of the cursor
		} else {
			xcoord += e.pageX;
		}
		if (docheight - e.pageY < (currentimageheight + 110)){
			ycoord += e.pageY - Math.max(0,(110 + 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 - 350; // Move to the left side of the cursor
		} else {
			xcoord += truebody().scrollLeft+event.clientX
		}
		if (docheight - event.clientY < (currentimageheight + 110)){
			ycoord += event.clientY + truebody().scrollTop - Math.max(0,(110 + 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)

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

}