/*
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 = 270;	// maximum image size.

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,description){
    document.onmousemove=followmouse;

    newHTML = '<div style="padding: 5px; background-color: #FFF; border: 2px solid #c9c7b6;">';
    if (title != undefined)
        newHTML = newHTML + '<span class="largetitle">' + title + '</span><div class="borderbot"></div>';
    if (description != undefined)
        newHTML = newHTML + description + '<br/>';
    newHTML = newHTML + '<div align="center" style="padding: 2px 2px 2px 2px;"><img src="' + imagename + '"></div>';

    newHTML = newHTML + '</div>';
    gettrailobjnostyle().innerHTML = newHTML;
    gettrailobj().visibility="visible";
    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]

    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)
    var docheight=12000; // set docheight to disable case differentiation below (the line above is the original)

    if (typeof e != "undefined"){
        if (docwidth - e.pageX < 380){
            xcoord = e.pageX - xcoord - 400; // 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 < 380){
            xcoord = event.clientX + truebody().scrollLeft - xcoord - 400; // 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;
        }
    }

    if(ycoord < 0) { ycoord = ycoord*-1; }
    gettrailobj().left=xcoord+"px"
    gettrailobj().top=ycoord+"px"
}