/*
Simple Image Trail script- By JavaScriptKit.com
Visit http://www.javascriptkit.com for this script and more
This notice must stay intact
*/

var w = 1
var h = 1
//window.onload = function() {
    if (document.getElementById || document.all)
        document.write('<div id="trailimageid" style="position:absolute;visibility:hidden;left:0px;top:-1000px;width:1px;height:1px;z-index:5000"><img id="ttimg"  /></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 = 'http://club.pconline.ir/Images/Loader.gif'
    gettrailobj().visibility = "hidden"
    // 	gettrailobj().left=-1000
    gettrailobj().top = 0
    dis_obj.setAttribute('style', 'border:Solid 0px #888888');

}


function showtrail(width, height, file) {
    w = width
    h = height

    // followmouse()
    dis_obj = document.getElementById('ttimg');
    dis_obj.src = file

   // img_obj = gettrailobj();
    document.onmousemove = followmouse;
    window.onscroll = hidetrail;
    gettrailobj().backgroundColor = 'White';
//    if (isNaN(w))
//        img_obj.width = w;
//    else
//        img_obj.width = w + "px";
//    if (isNaN(h))
//        img_obj.height = h;
//    else
//        img_obj.height = h + "px"

    followmouse(window.event);
    gettrailobj().visibility = "visible"
    dis_obj.setAttribute('style','border:Solid 5px #888888');
}


function followmouse(e) {
    var xcoord = 20
    var ycoord = 20

    if (typeof e != "undefined") {
        xcoord += (isNaN(e.pageX) ? e.clientX : e.pageX);
        ycoord += (isNaN(e.pageY) ? e.clientY : 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"
}