var w = 800
  var h = 573
  if (document.getElementById || document.all) {
      document.write('<div id="trailimageid" style="position: absolute; visibility: hidden; left: 0px; top: -1000px; z-index:100; border: 1px solid #000000; background: #000000; cursor:hand; "></div>')
  }
  function gettrailobj() {
      if (document.getElementById) {
          return document.getElementById("trailimageid").style
      } else {
          if (document.all) {
              return document.all.trailimageid.style
          }
      }
  }
  function truebody() { return (!window.opera && document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body }
  function hidetrail() {
    //document.onmousemove = ""
      document.getElementById('trailimageid').innerHTML = ""
      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
		w=540
		h=405
          thisfile = file;
//          document.getElementById('trailimageid').innerHTML = "<img src='" + thisfile + "' " + " onMouseOut='hidetrail();' onClick='hidetrail();'" + ">"; 
          document.getElementById('trailimageid').innerHTML = "<img src='" + thisfile + "' " + " onClick='hidetrail();'" + ">";           
          i = followmouse()
          gettrailobj().visibility = "visible"
//          document.onmousemove = followmouse
//        gettrailobj().left = truebody().scrollLeft + 100 + "px"
  //      gettrailobj().top  = truebody().scrollTop + 100 + "px"
      }
  }
  function followmouse(e) {
      if (navigator.userAgent.toLowerCase().indexOf('opera') == -1 && navigator.userAgent.toLowerCase().indexOf('safari') == -1) {
          var xcoord = 10
          var ycoord = 15
          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 > docwidth) {
              xcoord = xcoord - w - 20
          } 
          if (ycoord - truebody().scrollTop + h > truebody().clientHeight) {
              ycoord = ycoord - h - 30
          }
          xcoord = (docwidth-w)/2
          ycoord = truebody().scrollTop + (truebody().clientHeight-h)/2
          gettrailobj().left = xcoord + "px"
          gettrailobj().top  = ycoord + "px"
      }
  }