var ie=document.all;
var nn6=document.getElementById&&!document.all;

var isdrag=false;
var x,y;
var dobj;

function drag_continue(e) {
  if (isdrag) {
    dobj.style.left = (nn6 ? tx + e.clientX - x : tx + event.clientX - x) + 'px';
    dobj.style.top  = (nn6 ? ty + e.clientY - y : ty + event.clientY - y) + 'px';
    return false;
  }
}

function drag_begin(e) {
  var fobj       = nn6 ? e.target : event.srcElement;
  var topelement = nn6 ? "HTML" : "BODY";

  while (fobj.tagName != topelement && fobj.className != "dragme") {
    fobj = nn6 ? fobj.parentNode : fobj.parentElement;
  }

  if (fobj.className=="dragme") {
    isdrag = true;
    dobj = fobj;
    tx = parseInt(dobj.style.left+0);
    ty = parseInt(dobj.style.top+0);
    x = nn6 ? e.clientX : event.clientX;
    y = nn6 ? e.clientY : event.clientY;
    document.onmousemove = drag_continue;
    fobj.style.opacity = '0.7';
    fobj.style.filter = 'alpha(opacity=70)';
    return false;
  }
}

function drag_end(e) {
  var fobj = nn6 ? e.target : event.srcElement;
  fobj.style.opacity = '1';
  fobj.style.filter = 'alpha(opacity=100)';
  isdrag = false;
  document.onmousemove = null;
}

document.onmousedown = drag_begin;
document.onmouseup = drag_end;