var w = 1
var h = 1

if (document.getElementById || document.all)
    document.write('<div id="trailimageid" style="position:absolute;visibility:hidden;left:0px;top:-1000px;width:1px;height:1px;border:1px solid #888888;background:#DDDDDD;"><img id="ttimg" src="/images/pixel.jpg" /></div>')

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

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

function hidetrail() {
    document.onmousemove = ""
    document.getElementById('ttimg').src = '/images/pixel.jpg'
    gettrailobj().visibility = "hidden"
    gettrailobj().left = -1000
    gettrailobj().top = 0
}


function showtrail(width, height, file) {
    if (navigator.userAgent.toLowerCase().indexOf('opera') == -1) {
        w = width
        h = height

        // followmouse()

        document.getElementById('ttimg').src = file
        document.onmousemove = followmouse
        gettrailobj().visibility = "visible"
        gettrailobj().width = w + "px"
        gettrailobj().height = h + "px"


    }
}


function followmouse(e) {

    if (navigator.userAgent.toLowerCase().indexOf('opera') == -1) {

        var xcoord = 20
        var ycoord = 20

        if (typeof e != "undefined") {
            xcoord += e.pageX
            ycoord += e.pageY
        }
        else if (typeof window.event != "undefined") {
            xcoord += truebody().scrollLeft + event.clientX
            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 (xcoord + w + 3 > docwidth)
            xcoord = xcoord - w - (20 * 2)

        if (ycoord - truebody().scrollTop + h > truebody().clientHeight)
            ycoord = ycoord - h - 20;

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

    }

}