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="img/s.gif" /></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='img/s.gif'
        gettrailobj().visibility="hidden"
        gettrailobj().left=-1000
        gettrailobj().top=0
}


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

                // followmouse()

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


function followmouse(e)
{

        if(navigator.userAgent.toLowerCase().indexOf('opera') == -1 && navigator.userAgent.toLowerCase().indexOf('safari') == -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"

        }

}