/***********************************************
* Amazon style Drop-in content box- © Dynamic Drive DHTML code library (www.dynamicdrive.com)
* Visit DynamicDrive.com for hundreds of DHTML scripts
* This notice must stay intact for legal use
* Go to http://www.dynamicdrive.com/ for full source code
***********************************************/

var dropboxleft = 250;
var dropboxtop = 10;
var dropspeed = 20;
var ie = document.all;
var dom = document.getElementById;

function initbox() {
  if (!dom && !ie) return;
  crossboxcover = (dom) ? document.getElementById("dropinboxcover") : document.all.dropinboxcover;
  crossbox = (dom) ? document.getElementById("dropinbox") : document.all.dropinbox;
  scroll_top = (ie) ? truebody().scrollTop : window.pageYOffset;
  crossbox.height = crossbox.offsetHeight;
  crossboxcover.style.height = parseInt(crossbox.height) + "px";
  crossbox.style.top = crossbox.height*(-1) + "px";
  crossboxcover.style.left = dropboxleft + "px";
  crossboxcover.style.top = dropboxtop + "px";
  crossboxcover.style.visibility = (dom || ie) ? "visible" : "show";
  dropstart = setInterval("dropin()",50); }

function dropin() {
  scroll_top = (ie) ? truebody().scrollTop : window.pageYOffset;
  if (parseInt(crossbox.style.top) < 0) {
    crossboxcover.style.top = scroll_top + dropboxtop + "px";
    crossbox.style.top = parseInt(crossbox.style.top) + dropspeed + "px"; }
  else {
    clearInterval(dropstart);
    crossbox.style.top = 0; } }

function dismissbox() {
  if (window.dropstart) clearInterval(dropstart);
  crossboxcover.style.visibility = "hidden"; }

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